Question 1

Displacement is

Accepted Answer

A)  the distance traveled from the first position to the final position. 
B)  the distance from the origin to the final position. 
C)  the change of the position vector from the first position the final position. 
D)  the vector from the origin to the final position. 
A)  the distance traveled from the first position to the final position. 
B)  the distance from the origin to the final position. 
C)  the change of the position vector from the first position the final position. 
D)  the vector from the origin to the final position.

Question 2

A 450 g baseball is pitched,reaching the batter with a speed of 37 m/s and is hit such that it returns on the same line at 48 m/s.If the ball was in contact with the bat for 0.22 seconds,what was the average net force experienced by the ball during the time of contact?

Accepted Answer

A)  170 N 
B)  98 N 
C)  77 N 
D)  18 N 
A)  170 N 
B)  98 N 
C)  77 N 
D)  18 N

Question 3

A tractor T is pulling a trailer M with a constant acceleration.If the forward acceleration is 0.50 m/s2 and M = 400 kg and T = 500 kg,then the horizontal force on the tractor due to the ground is

Accepted Answer

A)  450 N forward. 
B)  450 N backward. 
C)  250 N forward. 
D)  250 N backward. 
E)  200 N forward. 
A)  450 N forward. 
B)  450 N backward. 
C)  250 N forward. 
D)  250 N backward. 
E)  200 N forward.

Question 4

A displacement vector D is given as 40.0 m long at an angle of 60.0 degrees NORTH of EAST.The Dx component and the Dy component of the vector are

Accepted Answer

A)  Dx = +34.6 m,Dy = +20.0 m. 
B)  Dx = +20.0 m,Dy = -34.6 m. 
C)  Dx = +20.0 m,Dy = +34.6 m. 
D)  Dx = -34.6 m,Dy = +20.0 m. 
E)  Dx = +34.6 m,Dy = -20.0 m. 
A)  Dx = +34.6 m,Dy = +20.0 m. 
B)  Dx = +20.0 m,Dy = -34.6 m. 
C)  Dx = +20.0 m,Dy = +34.6 m. 
D)  Dx = -34.6 m,Dy = +20.0 m. 
E)  Dx = +34.6 m,Dy = -20.0 m.

Question 5

A tractor T is pulling two trailers,M1 and M2,with a constant acceleration.T has a mass of 200 kg,M1 has a mass of 100 kg,and M2 has a mass of 150 kg.If the forward acceleration is 0.60 m/s2,then the horizontal force on the tractor due to the ground is

Accepted Answer

A)  270 N backward. 
B)  270 N forward. 
C)  150 N backward. 
D)  150 N forward. 
E)  90 N forward. 
A)  270 N backward. 
B)  270 N forward. 
C)  150 N backward. 
D)  150 N forward. 
E)  90 N forward.

Question 6

A car starts from rest and travels a distance of 100 m in 10 seconds.The acceleration of the car is

Accepted Answer

A)  1.0 m/s2. 
B)  2.0 m/s2. 
C)  2.5 m/s2. 
D)  3.0 m/s2. 
E)  3.5 m/s2. 
A)  1.0 m/s2. 
B)  2.0 m/s2. 
C)  2.5 m/s2. 
D)  3.0 m/s2. 
E)  3.5 m/s2.

Question 7

The interstate on-ramp is 1.5 km West of your home,and on leaving for grandmother's house you are only able to accomplish an average velocity of 12 km/hr between your home and the on-ramp.At the onramp,you wait for traffic,for 2.0 min - and then are able to proceed toward grandmother's house.If you wish to arrive there,which is 15 km South of the onramp,over a river and through some woods,in a total elapsed time of 25.0 minutes,what average speed must you maintain on the interstate highway?

Accepted Answer

A)  51 km/hr 
B)  67 km/hr 
C)  36 km/hr 
D)  none of these. 
A)  51 km/hr 
B)  67 km/hr 
C)  36 km/hr 
D)  none of these.

Question 8

A boat is traveling at 4.0 m/s as it passes the starting line of a race.If the boat accelerates at 1.0 m/s2 for 6.0 seconds,then the distance the boat has traveled after 6.0 seconds is

Accepted Answer

A)  42 m. 
B)  18 m. 
C)  26 m. 
D)  20 m. 
E)  14 m. 
A)  42 m. 
B)  18 m. 
C)  26 m. 
D)  20 m. 
E)  14 m.

Question 9

A 4.0 kg mass has a velocity of 10 m/s to the EAST.The 4.0 kg mass undergoes an acceleration of 4.0 m/s2 to the WEST for 3.0 sec.What is the velocity of the 4.0 kg mass at the end of the 3.0 sec interval?

Accepted Answer

A)  22 m/s to the WEST 
B)  2.0 m/s to the WEST 
C)  0.0 m/s 
D)  2.0 m/s to the EAST 
E)  22 m/s to the EAST 
A)  22 m/s to the WEST 
B)  2.0 m/s to the WEST 
C)  0.0 m/s 
D)  2.0 m/s to the EAST 
E)  22 m/s to the EAST

Question 10

Two masses are suspended by a cord that passes over a pulley with negligible mass.The cord also has negligible mass.One of the masses,m1,has a mass of 7.0 kg and the other mass,m2,has a mass of 3.0 kg.The pulley turns on a shaft through the center of the pulley and supports the pulley and all the masses.The vertical force of the shaft on the pulley that supports the whole system is

Accepted Answer

A)  49 N upward. 
B)  49 N downward. 
C)  82 N upward. 
D)  82 N downward. 
E)  98 N upward. 
A)  49 N upward. 
B)  49 N downward. 
C)  82 N upward. 
D)  82 N downward. 
E)  98 N upward.

Question 11

The figure shows the graph of vx versus time for an object moving along the x-axis.Solve graphically for the distance traveled from t = 9.0 s to t = 13.0 s.

Accepted Answer

A)  60 m 
B)  84 m 
C)  76 m 
D)  80 m 
A)  60 m 
B)  84 m 
C)  76 m 
D)  80 m

Question 12

If an object is located 20 m to the left of the origin at 1:00 PM,and later the object is located 30 m to the right of the origin at 2:00 PM,then the displacement from 1:00 PM to 2:00 PM is

Accepted Answer

A)  50 m to the right. 
B)  30 m to the right. 
C)  25 m to the right. 
D)  20 m to the left. 
E)  10 m to the left. 
A)  50 m to the right. 
B)  30 m to the right. 
C)  25 m to the right. 
D)  20 m to the left. 
E)  10 m to the left.

Question 13

The graph shows the speedometer reading of a car as it comes to a stop along a straight-line path.How far does the car move between t = 0 s and t = 16 s?

Accepted Answer

A)  130 m 
B)  140 m 
C)  150 m 
D)  160 m 
A)  130 m 
B)  140 m 
C)  150 m 
D)  160 m

Question 14

A 1.7 kg model airplane is flying north at 12.5 m/s initially - and 25 seconds later is observed heading 30 degrees west of north at 25 m/s.What is the magnitude of the average net force on the airplane during this time interval?

Accepted Answer

A)  0.85 N 
B)  0.63 N 
C)  1.1 N 
D)  1.5 N 
A)  0.85 N 
B)  0.63 N 
C)  1.1 N 
D)  1.5 N

Question 15

A tractor of mass M1 = 2,000 kg is pulling a trailer of mass M2 = 5,000 kg.If the tractor-trailer is accelerated at 2.0 m/s2,then the force the tractor applies to the road is

Accepted Answer

A)  14,000 N. 
B)  12,000 N. 
C)  10,000 N. 
D)  8,000 N. 
E)  6,000 N. 
A)  14,000 N. 
B)  12,000 N. 
C)  10,000 N. 
D)  8,000 N. 
E)  6,000 N.

Question 16

A boat is traveling at 4.0 m/s as it passes the starting line of a race.If the boat accelerates at 1.0 m/s2 for 6.0 seconds,then the average velocity of the boat for the 6.0 seconds is

Accepted Answer

A)  21 m/s. 
B)  9.0 m/s. 
C)  13 m/s. 
D)  10 m/s. 
E)  7.0 m/s. 
A)  21 m/s. 
B)  9.0 m/s. 
C)  13 m/s. 
D)  10 m/s. 
E)  7.0 m/s.

Question 17

A 2.0 kg object is moving at a velocity of 12.0 m/s.The drag force 6.0 N.If the drag force is given by the equation F = bv2,then the value of b is

Accepted Answer

A)  1.5 $\times$ 10-2 Ns2/m2. 
B)  4.2 $\times$ 10-2 kg/m. 
C)  3.9 $\times$ 10-1 kg/m2. 
D)  4.2 $\times$ 10-1 N/m2. 
E)  7.5 $\times$ 10-3 Ns2/m2. 
A)  1.5 $\times$ 10-2 Ns2/m2. 
B)  4.2 $\times$ 10-2 kg/m. 
C)  3.9 $\times$ 10-1 kg/m2. 
D)  4.2 $\times$ 10-1 N/m2. 
E)  7.5 $\times$ 10-3 Ns2/m2.

Question 18

An object starts with an initial velocity of 4.0 m/s and accelerates with an acceleration of +4.0 m/s2 for 6.0 seconds.It then decelerates at -2.0 m/s2 until its velocity is 4.0 m/s.The total distance covered is

Accepted Answer

A)  67 m. 
B)  94 m. 
C)  105 m. 
D)  192 m. 
E)  215 m. 
A)  67 m. 
B)  94 m. 
C)  105 m. 
D)  192 m. 
E)  215 m.

Question 19

A car travels at 50.0 km/hr for 2.00 hours.It then travels an additional distance of 40.0 km in 1.00 hour.The average speed of the car for the entire trip is

Accepted Answer

A)  61.0 km/hr. 
B)  57.1 km/hr. 
C)  53.3 km/hr. 
D)  46.7 km/hr. 
E)  30.0 km/hr. 
A)  61.0 km/hr. 
B)  57.1 km/hr. 
C)  53.3 km/hr. 
D)  46.7 km/hr. 
E)  30.0 km/hr.

Exam 3: Acceleration and Newtons Second Law of Motion

Displacement is

A 450 g baseball is pitched,reaching the batter with a speed of 37 m/s and is hit such that it returns on the same line at 48 m/s.If the ball was in contact with the bat for 0.22 seconds,what was the average net force experienced by the ball during the time of contact?

A tractor T is pulling a trailer M with a constant acceleration.If the forward acceleration is 0.50 m/s2 and M = 400 kg and T = 500 kg,then the horizontal force on the tractor due to the ground is

A displacement vector D is given as 40.0 m long at an angle of 60.0 degrees NORTH of EAST.The Dx component and the Dy component of the vector are

A tractor T is pulling two trailers,M1 and M2,with a constant acceleration.T has a mass of 200 kg,M1 has a mass of 100 kg,and M2 has a mass of 150 kg.If the forward acceleration is 0.60 m/s2,then the horizontal force on the tractor due to the ground is

A car starts from rest and travels a distance of 100 m in 10 seconds.The acceleration of the car is

A boat is traveling at 4.0 m/s as it passes the starting line of a race.If the boat accelerates at 1.0 m/s2 for 6.0 seconds,then the distance the boat has traveled after 6.0 seconds is

A 4.0 kg mass has a velocity of 10 m/s to the EAST.The 4.0 kg mass undergoes an acceleration of 4.0 m/s2 to the WEST for 3.0 sec.What is the velocity of the 4.0 kg mass at the end of the 3.0 sec interval?

The figure shows the graph of vx versus time for an object moving along the x-axis.Solve graphically for the distance traveled from t = 9.0 s to t = 13.0 s.

If an object is located 20 m to the left of the origin at 1:00 PM,and later the object is located 30 m to the right of the origin at 2:00 PM,then the displacement from 1:00 PM to 2:00 PM is

The graph shows the speedometer reading of a car as it comes to a stop along a straight-line path.How far does the car move between t = 0 s and t = 16 s?

A 1.7 kg model airplane is flying north at 12.5 m/s initially - and 25 seconds later is observed heading 30 degrees west of north at 25 m/s.What is the magnitude of the average net force on the airplane during this time interval?

A tractor of mass M1 = 2,000 kg is pulling a trailer of mass M2 = 5,000 kg.If the tractor-trailer is accelerated at 2.0 m/s2,then the force the tractor applies to the road is

A boat is traveling at 4.0 m/s as it passes the starting line of a race.If the boat accelerates at 1.0 m/s2 for 6.0 seconds,then the average velocity of the boat for the 6.0 seconds is

A 2.0 kg object is moving at a velocity of 12.0 m/s.The drag force 6.0 N.If the drag force is given by the equation F = bv2,then the value of b is

An object starts with an initial velocity of 4.0 m/s and accelerates with an acceleration of +4.0 m/s2 for 6.0 seconds.It then decelerates at -2.0 m/s2 until its velocity is 4.0 m/s.The total distance covered is

A car travels at 50.0 km/hr for 2.00 hours.It then travels an additional distance of 40.0 km in 1.00 hour.The average speed of the car for the entire trip is

Introduction

Force

Motion With Constant Acceleration

Circular Motion

Conservation of Energy

Linear Momentum

Torque and Angular Momentum

Fluids

Elasticity and Oscillations

Waves

Sound

Temperature and the Ideal Gas

Heat

Thermodynamics

Electric Forces and Fields

Electric Potential

Electric Current and Circuits

Magnetic Forces and Fields

Electromagnetic Induction

Alternating Current

Electromagnetic Waves

Reflection and Refraction of Light

Optical Instruments

Interference and Diffraction

Relativity

Early Quantum Physics and the Photon

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A tractor T is pulling a trailer M with a constant acceleration.If the forward acceleration is 0.50 m/s² and M = 400 kg and T = 500 kg,then the horizontal force on the tractor due to the ground is

A displacement vector D is given as 40.0 m long at an angle of 60.0 degrees NORTH of EAST.The D_x component and the D_y component of the vector are

A tractor T is pulling two trailers,M₁ and M₂,with a constant acceleration.T has a mass of 200 kg,M₁ has a mass of 100 kg,and M₂ has a mass of 150 kg.If the forward acceleration is 0.60 m/s²,then the horizontal force on the tractor due to the ground is

A boat is traveling at 4.0 m/s as it passes the starting line of a race.If the boat accelerates at 1.0 m/s² for 6.0 seconds,then the distance the boat has traveled after 6.0 seconds is

A 4.0 kg mass has a velocity of 10 m/s to the EAST.The 4.0 kg mass undergoes an acceleration of 4.0 m/s² to the WEST for 3.0 sec.What is the velocity of the 4.0 kg mass at the end of the 3.0 sec interval?

The figure shows the graph of v_x versus time for an object moving along the x-axis.Solve graphically for the distance traveled from t = 9.0 s to t = 13.0 s.

A tractor of mass M₁ = 2,000 kg is pulling a trailer of mass M₂ = 5,000 kg.If the tractor-trailer is accelerated at 2.0 m/s²,then the force the tractor applies to the road is

A boat is traveling at 4.0 m/s as it passes the starting line of a race.If the boat accelerates at 1.0 m/s² for 6.0 seconds,then the average velocity of the boat for the 6.0 seconds is

A 2.0 kg object is moving at a velocity of 12.0 m/s.The drag force 6.0 N.If the drag force is given by the equation F = bv²,then the value of b is

An object starts with an initial velocity of 4.0 m/s and accelerates with an acceleration of +4.0 m/s² for 6.0 seconds.It then decelerates at -2.0 m/s² until its velocity is 4.0 m/s.The total distance covered is