Question 1

A golfer drives her ball from the tee down the fairway in a high arcing shot. When the ball is at the highest point of its flight,

Accepted Answer

A)  its velocity and acceleration are both zero. 
B)  its velocity is zero but its acceleration is nonzero. 
C)  its velocity is nonzero but its acceleration is zero. 
D)  its velocity and acceleration are both nonzero. 
E)  Insufficient information is given to answer correctly. 
A)  its velocity and acceleration are both zero. 
B)  its velocity is zero but its acceleration is nonzero. 
C)  its velocity is nonzero but its acceleration is zero. 
D)  its velocity and acceleration are both nonzero. 
E)  Insufficient information is given to answer correctly.

Question 2

A ball is thrown horizontally from a cliff with a velocity   0. A graph of the acceleration of the ball versus the distance fallen could be represented by curve

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 3

If an object is moving west, its acceleration

Accepted Answer

A)  is north. 
B)  is east. 
C)  is west. 
D)  is south. 
E)  may be any direction. 
A)  is north. 
B)  is east. 
C)  is west. 
D)  is south. 
E)  may be any direction.

Question 4

A projectile was fired at 35º above the horizontal. At the highest point in its trajectory its speed was 200 m/s. If air resistance is ignored, the initial velocity had a horizontal component of

Accepted Answer

A)  zero 
B)  200 cos (35º) m/s 
C)  200 sin (35º) m/s 
D)  200/cos (35º) m/s 
E)  200 m/s 
A)  zero 
B)  200 cos (35º) m/s 
C)  200 sin (35º) m/s 
D)  200/cos (35º) m/s 
E)  200 m/s

Question 5

Use the figure to answer questions  
The figure represents the parabolic trajectory of a ball going from a to e in Earth gravity but without air resistance. The initial velocity of the ball is VS1U1B1oS1U1B0 at an angle θ to the horizon. The vertical dashed lines represent equal time interval, Δt.
  
-The horizontal velocity at point c is

Accepted Answer

A)  0 
B)  Vo cos ($\theta$) 
C)  Vo sin ($\theta$) 
D)  Vo 
E)  depends on what g is along the path 
A)  0 
B)  Vo cos ($\theta$) 
C)  Vo sin ($\theta$) 
D)  Vo 
E)  depends on what g is along the path

Question 6

You walk 12 km south and then 5 km east. Your resultant displacement is

Accepted Answer

A)  13 km at an angle of 22.6º south of east. 
B)  13 km at an angle of 67.4º south of east. 
C)  17 km at an angle of 22.6º south of east. 
D)  17 km at an angle of 67.4º south of east. 
E)  None of these is correct. 
A)  13 km at an angle of 22.6º south of east. 
B)  13 km at an angle of 67.4º south of east. 
C)  17 km at an angle of 22.6º south of east. 
D)  17 km at an angle of 67.4º south of east. 
E)  None of these is correct.

Question 7

A projectile is fired with an initial speed of 1000 m/s at an angle of 37º above the horizontal. If air resistance is neglected, the horizontal component of the projectile's velocity after 20 s is approximately

Accepted Answer

A)  600 m/s 
B)  800 m/s 
C)  640 m/s 
D)  40 m/s 
E)  160 m/s 
A)  600 m/s 
B)  800 m/s 
C)  640 m/s 
D)  40 m/s 
E)  160 m/s

Question 8

The position vector of an object is given by   and 4 s later, its position vector is   . The units are in m. The average velocity vector,   in m/s is

Accepted Answer

A)    
B)    
C)    
D)    
E)  None of the above 
A)    
B)    
C)    
D)    
E)  None of the above

Question 9

Use the figure to answer questions  
The figure represents the parabolic trajectory of a ball going from a to e in Earth gravity but without air resistance. The initial velocity of the ball is VS1U1B1oS1U1B0 at an angle θ to the horizon. The vertical dashed lines represent equal time interval, Δt.
  
-The vertical velocity at point b is: Note: (g = 9.81 m/s2)

Accepted Answer

A)  0 
B)  Vo cos ($\theta$) - ½ g (2$\Delta$t)2 
C)  Vo sin ($\theta$) - ½ g (2$\Delta$t)2 
D)  Vo sin ($\theta$) + ½ g (2$\Delta$t)2 
E)  Vo cos ($\theta$) + ½ g (2$\Delta$t)2 
A)  0 
B)  Vo cos ($\theta$) - ½ g (2$\Delta$t)2 
C)  Vo sin ($\theta$) - ½ g (2$\Delta$t)2 
D)  Vo sin ($\theta$) + ½ g (2$\Delta$t)2 
E)  Vo cos ($\theta$) + ½ g (2$\Delta$t)2

Question 10

A vector has an x component of 5.51 units and a y component of -9.52 units. The angle between the positive direction of the vector and the positive direction of the x axis is approximately

Accepted Answer

A)  30º 
B)  -30º 
C)  60º 
D)  -60º 
E)  None of these is correct. 
A)  30º 
B)  -30º 
C)  60º 
D)  -60º 
E)  None of these is correct.

Question 11

The position vector of an object is given by   and 4 s later, its position vector is   . The units are in m. The change in the position vector   , in m, is

Accepted Answer

A)    
B)    
C)    
D)    
E)  None of the above 
A)    
B)    
C)    
D)    
E)  None of the above

Question 12

The maximum horizontal range of a rock which is thrown at the same speed but different angles with the horizon and which lands at a level, H, below the initial level occurs when the angle is

Accepted Answer

A)  less than 0S1U1P1$\circ$S1S1P0 
B)  0S1U1P1$\circ$S1S1P0 
C)  greater than 0S1U1P1$\circ$S1S1P0and less than 45S1U1P1$\circ$S1S1P0 (actual value depends on the value of H) 
D)  45S1U1P1$\circ$S1S1P0 
E)  greater than 45S1U1P1$\circ$S1S1P0 
A)  less than 0S1U1P1$\circ$S1S1P0 
B)  0S1U1P1$\circ$S1S1P0 
C)  greater than 0S1U1P1$\circ$S1S1P0and less than 45S1U1P1$\circ$S1S1P0 (actual value depends on the value of H) 
D)  45S1U1P1$\circ$S1S1P0 
E)  greater than 45S1U1P1$\circ$S1S1P0

Question 13

A car is at position (x1, y1) = (4 m, 5 m) at time t1 = 1 s. If 10 seconds later the car moving in a straight line is at position (x2, y2) = (204 m, 305 m), calculate the magnitude of the average velocity during this interval.

Accepted Answer

A)  36.1 m/s 
B)  32.8 m/s 
C)  36.7 m/s 
D)  50.0 m/s 
E)  40.1 m/s 
A)  36.1 m/s 
B)  32.8 m/s 
C)  36.7 m/s 
D)  50.0 m/s 
E)  40.1 m/s

Question 14

Use the following to answer question :  
-The figure represents the parabolic trajectory of a ball going from A to E in Earth gravity but without air resistance. At point C the velocity of the ball is

Accepted Answer

A)  a maximum and is directed to the right 
B)  directed to the left 
C)  a maximum 
D)  a minimum and is directed to the right 
E)  zero 
A)  a maximum and is directed to the right 
B)  directed to the left 
C)  a maximum 
D)  a minimum and is directed to the right 
E)  zero

Question 15

Use the following to answer question   
-The figure represents the parabolic trajectory of a ball going from A to E. What is the speed at point C compared with that at point A?

Accepted Answer

A)  It is greater at C than at A 
B)  It is less at C than at A 
C)  The speeds are identical 
D)  The speeds are both zero 
E)  It is not possible to answer this question without more information. 
A)  It is greater at C than at A 
B)  It is less at C than at A 
C)  The speeds are identical 
D)  The speeds are both zero 
E)  It is not possible to answer this question without more information.

Question 16

If you ignore air resistance in projectile motion, the ________ of the projectile remains constant.

Accepted Answer

A)  velocity vector 
B)  horizontal component of the velocity vector 
C)  vertical component of the velocity vector 
D)  speed 
E)  range 
A)  velocity vector 
B)  horizontal component of the velocity vector 
C)  vertical component of the velocity vector 
D)  speed 
E)  range

Question 17

An airplane in horizontal flight releases a relief package as shown in the diagram. The trajectory of the package is best represented by

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  None of these is correct. 
A)  1 
B)  2 
C)  3 
D)  4 
E)  None of these is correct.

Question 18

A pilot wants the heading of an airplane to be 37º east of north. The wind is from the east at 37 km/h. The airplane has a speed relative to the air of 370 km/h. Approximately what heading should the pilot maintain? ($\textbf{     Hint:     }$ Sketch the problem graphically and select the best answer from the list given.)

Accepted Answer

A)  318º 
B)  4.6º 
C)  122º 
D)  32º 
E)  42º 
A)  318º 
B)  4.6º 
C)  122º 
D)  32º 
E)  42º

Question 19

If a baseball is thrown at an angle of elevation of 30º, its range in the absence of air resistance is less than that of one thrown at

Accepted Answer

A)  0º 
B)  80º 
C)  20º 
D)  55º 
E)  90º 
A)  0º 
B)  80º 
C)  20º 
D)  55º 
E)  90º

Question 20

A projectile is ejected from a 25-m high tower with a velocity of 40 m/s at an angle of 30 degrees to the horizontal first on Earth and then on Mars. What is the ratio of the time taken to hit the ground on Mars compared to Earth? (Assume gMars = 0.38gEarth)

Accepted Answer

A)  2.4 
B)  2.6 
C)  0.38 
D)  6.9 
E)  1.0 
A)  2.4 
B)  2.6 
C)  0.38 
D)  6.9 
E)  1.0

A golfer drives her ball from the tee down the fairway in a high arcing shot. When the ball is at the highest point of its flight,

A ball is thrown horizontally from a cliff with a velocity ₀. A graph of the acceleration of the ball versus the distance fallen could be represented by curve

If an object is moving west, its acceleration

A projectile was fired at 35º above the horizontal. At the highest point in its trajectory its speed was 200 m/s. If air resistance is ignored, the initial velocity had a horizontal component of

You walk 12 km south and then 5 km east. Your resultant displacement is

A projectile is fired with an initial speed of 1000 m/s at an angle of 37º above the horizontal. If air resistance is neglected, the horizontal component of the projectile's velocity after 20 s is approximately

The position vector of an object is given by and 4 s later, its position vector is . The units are in m. The average velocity vector, in m/s is

A vector has an x component of 5.51 units and a y component of -9.52 units. The angle between the positive direction of the vector and the positive direction of the x axis is approximately

The position vector of an object is given by and 4 s later, its position vector is . The units are in m. The change in the position vector , in m, is

The maximum horizontal range of a rock which is thrown at the same speed but different angles with the horizon and which lands at a level, H, below the initial level occurs when the angle is

A car is at position (x₁, y₁) = (4 m, 5 m) at time t₁ = 1 s. If 10 seconds later the car moving in a straight line is at position (x₂, y₂) = (204 m, 305 m), calculate the magnitude of the average velocity during this interval.

Use the following to answer question : -The figure represents the parabolic trajectory of a ball going from A to E in Earth gravity but without air resistance. At point C the velocity of the ball is

Use the following to answer question -The figure represents the parabolic trajectory of a ball going from A to E. What is the speed at point C compared with that at point A?

If you ignore air resistance in projectile motion, the ________ of the projectile remains constant.

An airplane in horizontal flight releases a relief package as shown in the diagram. The trajectory of the package is best represented by

If a baseball is thrown at an angle of elevation of 30º, its range in the absence of air resistance is less than that of one thrown at

A projectile is ejected from a 25-m high tower with a velocity of 40 m/s at an angle of 30 degrees to the horizontal first on Earth and then on Mars. What is the ratio of the time taken to hit the ground on Mars compared to Earth? (Assume g_Mars = 0.38g_Earth)

Systems of Measurement

Motion in One Dimension

Newtons Laws

Applications of Newtons Laws

Work and Energy

Conservation of Energy

Systems of Particles and Conservation of Linear Momentum

Rotation

Conservation of Angular Momentum

Gravity

Static Equilibrium and Elasticity

Fluids

Oscillations

Wave Motion

Superposition and Standing Waves

Temperature and the Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

The Second Law of Thermodynamics

Thermal Properties and Processes

Filters

Exam 3: Motion in Two and Three Dimensions

A golfer drives her ball from the tee down the fairway in a high arcing shot. When the ball is at the highest point of its flight,

A ball is thrown horizontally from a cliff with a velocity 0. A graph of the acceleration of the ball versus the distance fallen could be represented by curve

If an object is moving west, its acceleration

A projectile was fired at 35º above the horizontal. At the highest point in its trajectory its speed was 200 m/s. If air resistance is ignored, the initial velocity had a horizontal component of

You walk 12 km south and then 5 km east. Your resultant displacement is

A projectile is fired with an initial speed of 1000 m/s at an angle of 37º above the horizontal. If air resistance is neglected, the horizontal component of the projectile's velocity after 20 s is approximately

The position vector of an object is given by and 4 s later, its position vector is . The units are in m. The average velocity vector, in m/s is

A vector has an x component of 5.51 units and a y component of -9.52 units. The angle between the positive direction of the vector and the positive direction of the x axis is approximately

The position vector of an object is given by and 4 s later, its position vector is . The units are in m. The change in the position vector , in m, is

The maximum horizontal range of a rock which is thrown at the same speed but different angles with the horizon and which lands at a level, H, below the initial level occurs when the angle is

A car is at position (x1, y1) = (4 m, 5 m) at time t1 = 1 s. If 10 seconds later the car moving in a straight line is at position (x2, y2) = (204 m, 305 m), calculate the magnitude of the average velocity during this interval.

Use the following to answer question : -The figure represents the parabolic trajectory of a ball going from A to E in Earth gravity but without air resistance. At point C the velocity of the ball is

Use the following to answer question -The figure represents the parabolic trajectory of a ball going from A to E. What is the speed at point C compared with that at point A?

If you ignore air resistance in projectile motion, the ________ of the projectile remains constant.

An airplane in horizontal flight releases a relief package as shown in the diagram. The trajectory of the package is best represented by

If a baseball is thrown at an angle of elevation of 30º, its range in the absence of air resistance is less than that of one thrown at

A projectile is ejected from a 25-m high tower with a velocity of 40 m/s at an angle of 30 degrees to the horizontal first on Earth and then on Mars. What is the ratio of the time taken to hit the ground on Mars compared to Earth? (Assume gMars = 0.38gEarth)

Systems of Measurement

Motion in One Dimension

Newtons Laws

Applications of Newtons Laws

Work and Energy

Conservation of Energy

Systems of Particles and Conservation of Linear Momentum

Rotation

Conservation of Angular Momentum

Gravity

Static Equilibrium and Elasticity

Fluids

Oscillations

Wave Motion

Superposition and Standing Waves

Temperature and the Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

The Second Law of Thermodynamics

Thermal Properties and Processes

Filters

A ball is thrown horizontally from a cliff with a velocity ₀. A graph of the acceleration of the ball versus the distance fallen could be represented by curve

A car is at position (x₁, y₁) = (4 m, 5 m) at time t₁ = 1 s. If 10 seconds later the car moving in a straight line is at position (x₂, y₂) = (204 m, 305 m), calculate the magnitude of the average velocity during this interval.

A projectile is ejected from a 25-m high tower with a velocity of 40 m/s at an angle of 30 degrees to the horizontal first on Earth and then on Mars. What is the ratio of the time taken to hit the ground on Mars compared to Earth? (Assume g_Mars = 0.38g_Earth)