Question 1

An object rises at 5.0 m/s under the influence of gravity only. One second later the object is

Accepted Answer

A)  rising at 4.8 m/s. 
B)  rising at 5 m/s. 
C)  neither rising nor falling. 
D)  falling at 4.8 m/s. 
A)  rising at 4.8 m/s. 
B)  rising at 5 m/s. 
C)  neither rising nor falling. 
D)  falling at 4.8 m/s.

Question 2

The acceleration of a body is given by the slope of a graph plotting

Accepted Answer

A)  distance travelled versus time. 
B)  time versus velocity. 
C)  velocity versus distance travelled. 
D)  velocity versus time. 
E)  time versus distance travelled. 
A)  distance travelled versus time. 
B)  time versus velocity. 
C)  velocity versus distance travelled. 
D)  velocity versus time. 
E)  time versus distance travelled.

Question 3

An iron robot falls from rest at a great height. Neglecting air resistance, what distance has it fallen in the first 3.5 seconds?

Accepted Answer

A)  31 m 
B)  60 m 
C)  49 m 
D)  98 m 
A)  31 m 
B)  60 m 
C)  49 m 
D)  98 m

Question 4

A person standing at the edge of a cliff throws one rock straight up and another rock straight down at the same initial speed. The rock that was thrown __________ has less speed at impact.

Accepted Answer

A)  upward 
B)  downward 
C)  Actually, each rock has the same speed just before impact. 
A)  upward 
B)  downward 
C)  Actually, each rock has the same speed just before impact.

Question 5

A ball rolls off a shelf and hits the floor below 0.25 second later. To find the speed of the ball as it left the shelf, we would need

Accepted Answer

A)  the distance measured along the floor to the point of impact. 
B)  to repeat the experiment. 
C)  the height of the table. 
D)  the weight of the ball. 
A)  the distance measured along the floor to the point of impact. 
B)  to repeat the experiment. 
C)  the height of the table. 
D)  the weight of the ball.

Question 6

Which of the following does not move like a projectile?

Accepted Answer

A)  A monkey jumping from a tree 
B)  The seeds at a watermelon seed spitting contest 
C)  An airplane flying at a constant altitude 
D)  A rock kicked up by a truck wheel 
A)  A monkey jumping from a tree 
B)  The seeds at a watermelon seed spitting contest 
C)  An airplane flying at a constant altitude 
D)  A rock kicked up by a truck wheel

Question 7

A football is thrown upward at some angle above the horizontal. If we neglect air friction, then we can conclude that the acceleration vector of the football is

Accepted Answer

A)  opposite to the velocity vector. 
B)  zero. 
C)  along the direction of motion. 
D)  down. 
A)  opposite to the velocity vector. 
B)  zero. 
C)  along the direction of motion. 
D)  down.

Question 8

The acceleration due to gravity near the surface of Mars is about one-third of the value near the Earth's surface. If a rock fell from rest for the same amount of time on Mars and Earth, the final speed of the rock would be

Accepted Answer

A)  three times faster than on Earth. 
B)  the square root of three times faster than on Earth. 
C)  the same speed as on Earth. 
D)  the square root of three times slower than on Earth. 
E)  three times slower than on Earth. 
A)  three times faster than on Earth. 
B)  the square root of three times faster than on Earth. 
C)  the same speed as on Earth. 
D)  the square root of three times slower than on Earth. 
E)  three times slower than on Earth.

Question 9

A 10 pound iron ball and a 2 pound iron ball are dropped simultaneously from a height of 100 meters. Neglecting air resistance, which ball will reach the ground first?

Accepted Answer

A)  The 10 lb ball 
B)  The 2 lb ball 
C)  They will reach the ground at the same time. 
A)  The 10 lb ball 
B)  The 2 lb ball 
C)  They will reach the ground at the same time.

Question 10

A ball thrown upward reaches its maximum height and then falls back. If air resistance is negligible, its acceleration is

Accepted Answer

A)  less on the way up than on the way down. 
B)  less on the way down than on the way up. 
C)  the same up and down but zero at the top. 
D)  the same at all points in the motion. 
A)  less on the way up than on the way down. 
B)  less on the way down than on the way up. 
C)  the same up and down but zero at the top. 
D)  the same at all points in the motion.

Question 11

A ball is thrown at an upward angle. The horizontal speed of the ball is 20 m/s and the ball covers a distance of 10 m. The maximum height of the arc through which the ball travels is

Accepted Answer

A)  1.2 m. 
B)  4.9 m. 
C)  10 m. 
D)  It cannot be determined from this information. 
A)  1.2 m. 
B)  4.9 m. 
C)  10 m. 
D)  It cannot be determined from this information.

Question 12

A body whose velocity increases by a constant amount each second is exhibiting motion for which the ____________________ is constant.

Accepted Answer

accelerati

Question 13

A bullet is fired horizontally at a target 20 m away. The velocity of the bullet as it leaves the gun is 200 m/s. How much, approximately, will the bullet drop on its way to the target?

Accepted Answer

A)  0.05 m 
B)  0.1 m 
C)  0.2 m 
D)  0.3 m 
E)  0.4 m 
A)  0.05 m 
B)  0.1 m 
C)  0.2 m 
D)  0.3 m 
E)  0.4 m

Question 14

A ball is thrown across the street. During its flight, the ball's speed is lowest at

Accepted Answer

A)  the beginning of its flight. 
B)  the end of its flight. 
C)  the highest point of its flight. 
D)  the speed is constant throughout the flight. 
A)  the beginning of its flight. 
B)  the end of its flight. 
C)  the highest point of its flight. 
D)  the speed is constant throughout the flight.

An object rises at 5.0 m/s under the influence of gravity only. One second later the object is

The acceleration of a body is given by the slope of a graph plotting

An iron robot falls from rest at a great height. Neglecting air resistance, what distance has it fallen in the first 3.5 seconds?

A person standing at the edge of a cliff throws one rock straight up and another rock straight down at the same initial speed. The rock that was thrown __________ has less speed at impact.

A ball rolls off a shelf and hits the floor below 0.25 second later. To find the speed of the ball as it left the shelf, we would need

Which of the following does not move like a projectile?

A football is thrown upward at some angle above the horizontal. If we neglect air friction, then we can conclude that the acceleration vector of the football is

The acceleration due to gravity near the surface of Mars is about one-third of the value near the Earth's surface. If a rock fell from rest for the same amount of time on Mars and Earth, the final speed of the rock would be

A 10 pound iron ball and a 2 pound iron ball are dropped simultaneously from a height of 100 meters. Neglecting air resistance, which ball will reach the ground first?

A ball thrown upward reaches its maximum height and then falls back. If air resistance is negligible, its acceleration is

A ball is thrown at an upward angle. The horizontal speed of the ball is 20 m/s and the ball covers a distance of 10 m. The maximum height of the arc through which the ball travels is

A body whose velocity increases by a constant amount each second is exhibiting motion for which the ____________________ is constant.

A bullet is fired horizontally at a target 20 m away. The velocity of the bullet as it leaves the gun is 200 m/s. How much, approximately, will the bullet drop on its way to the target?

A ball is thrown across the street. During its flight, the ball's speed is lowest at

Physics, the Fundamental Science

Describing Motion

Newtons Laws: Explaining Motion

Circular Motion, the Planets, and Gravity

Energy and Oscillations

Momentum and Impulse

Rotational Motion of Solid Objects

The Behavior of Fluids

Temperature and Heat

Heat Engines and the Second Law of Thermodynamics

Electrostatic Phenomena

Electric Circuits

Magnets and Electromagnetism

Making Waves

Light Waves and Color

Light and Image Formation

The Structure of the Atom

The Nucleus and Nuclear Energy

Relativity

Beyond Everyday Phenomena

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Exam 3: Falling Objects and Projectile Motion

An object rises at 5.0 m/s under the influence of gravity only. One second later the object is

The acceleration of a body is given by the slope of a graph plotting

An iron robot falls from rest at a great height. Neglecting air resistance, what distance has it fallen in the first 3.5 seconds?

A person standing at the edge of a cliff throws one rock straight up and another rock straight down at the same initial speed. The rock that was thrown __________ has less speed at impact.

A ball rolls off a shelf and hits the floor below 0.25 second later. To find the speed of the ball as it left the shelf, we would need

Which of the following does not move like a projectile?

A football is thrown upward at some angle above the horizontal. If we neglect air friction, then we can conclude that the acceleration vector of the football is

The acceleration due to gravity near the surface of Mars is about one-third of the value near the Earth's surface. If a rock fell from rest for the same amount of time on Mars and Earth, the final speed of the rock would be

A 10 pound iron ball and a 2 pound iron ball are dropped simultaneously from a height of 100 meters. Neglecting air resistance, which ball will reach the ground first?

A ball thrown upward reaches its maximum height and then falls back. If air resistance is negligible, its acceleration is

A ball is thrown at an upward angle. The horizontal speed of the ball is 20 m/s and the ball covers a distance of 10 m. The maximum height of the arc through which the ball travels is

A body whose velocity increases by a constant amount each second is exhibiting motion for which the ____________________ is constant.

A bullet is fired horizontally at a target 20 m away. The velocity of the bullet as it leaves the gun is 200 m/s. How much, approximately, will the bullet drop on its way to the target?

A ball is thrown across the street. During its flight, the ball's speed is lowest at

Physics, the Fundamental Science

Describing Motion

Newtons Laws: Explaining Motion

Circular Motion, the Planets, and Gravity

Energy and Oscillations

Momentum and Impulse

Rotational Motion of Solid Objects

The Behavior of Fluids

Temperature and Heat

Heat Engines and the Second Law of Thermodynamics

Electrostatic Phenomena

Electric Circuits

Magnets and Electromagnetism

Making Waves

Light Waves and Color

Light and Image Formation

The Structure of the Atom

The Nucleus and Nuclear Energy

Relativity

Beyond Everyday Phenomena

Filters