Question 1

Which of these graphs would be correct for the speed of a ball thrown upward?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
A)  A 
B)  B 
C)  C 
D)  D C

Question 2

Two people stand on different floors of an outdoor stairway. One is 6 m above the ground and the other is 12 m above the ground. The person on the lower floor throws a ball upward with a speed of 15 m/s and the other person just drops hers. Ignoring air resistance, which ball hits the ground at a higher speed?

Accepted Answer

A)  The one thrown upward. 
B)  The one that is dropped. 
C)  They both hit the ground with the same speed. 
A)  The one thrown upward. 
B)  The one that is dropped. 
C)  They both hit the ground with the same speed. A

Question 3

The time of flight of a projectile, fired horizontally over level ground, is independent of its horizontal _________________.

Accepted Answer

velocity or speed

Question 4

One day while measuring acceleration with his pulse as a timing source, Galileo became so excited that his pulse rate increased. His results for acceleration that day were probably

Accepted Answer

A)  higher than usual. 
B)  lower than usual. 
C)  more accurate than usual. 
D)  unchanged. 
A)  higher than usual. 
B)  lower than usual. 
C)  more accurate than usual. 
D)  unchanged.

Question 5

Which of the curves in the figure best shows the speed of an object falling from rest without air friction?

Accepted Answer

A)  A 
B)  B 
C)  C 
A)  A 
B)  B 
C)  C

Question 6

If air resistance can be ignored, which of the following graphs will be a straight line for a falling object?

Accepted Answer

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

Question 7

During batting practice, two baseballs have the same speed when leaving the bat of Babe Ruth. One ball goes over the outfield fence for a home run, and the other can be caught by an infielder. The difference between the two swings is that the home run ball starts out _________ to 45$\degree$.

Accepted Answer

The answer of During batting practice, two baseballs have the...

Question 8

Assuming g = 10 m/s2 and that air resistance is negligible, in 1/2 second a ball dropped from rest will fall

Accepted Answer

A)  0.3 m. 
B)  0.8 m. 
C)  1.0 m. 
D)  1.25 m. 
E)  2.25 m. 
A)  0.3 m. 
B)  0.8 m. 
C)  1.0 m. 
D)  1.25 m. 
E)  2.25 m.

Question 9

A football is kicked at an angle, giving it a horizontal velocity of 25 m/s. At the highest point in its path, the football will have a velocity of ________ m/s and a horizontal acceleration of ___________ m/s2.

Accepted Answer

25 and zer

Question 10

A bullet is fired straight down from a hovering helicopter. If we neglect air friction, then the velocity of the bullet

Accepted Answer

A)  increases at 9.8 m/s each second. 
B)  is a constant. 
C)  is zero. 
D)  decreases at 9.8 ft/s during the flight. 
A)  increases at 9.8 m/s each second. 
B)  is a constant. 
C)  is zero. 
D)  decreases at 9.8 ft/s during the flight.

Question 11

In order to find the depth of a well, you drop a stone into it and time its fall. It hits the water after falling for 1.5 s. The depth of the well is about

Accepted Answer

A)  7.35 m. 
B)  11 m. 
C)  14 m. 
D)  20 m. 
A)  7.35 m. 
B)  11 m. 
C)  14 m. 
D)  20 m.

Question 12

A ball is thrown straight up. It reaches its highest point and then falls back. Which of the following is the correct statement?

Accepted Answer

A)  Throughout its motion, the ball's velocity is zero. 
B)  At the highest point in its motion, the ball's acceleration is zero. 
C)  At the highest point in its motion, the ball's velocity is zero. 
D)  Throughout its motion, the ball's acceleration is zero. 
E)  At the highest point in its motion, the ball's velocity and acceleration are zero. 
A)  Throughout its motion, the ball's velocity is zero. 
B)  At the highest point in its motion, the ball's acceleration is zero. 
C)  At the highest point in its motion, the ball's velocity is zero. 
D)  Throughout its motion, the ball's acceleration is zero. 
E)  At the highest point in its motion, the ball's velocity and acceleration are zero.

Question 13

A ball is thrown straight up with an initial velocity of 10 m/s. After 3 seconds its velocity will be

Accepted Answer

A)  -19.4 m/s. 
B)  -29.4 m/s. 
C)  0 m/s. 
D)  29.4 m/s. 
E)  19.4 m/s. 
A)  -19.4 m/s. 
B)  -29.4 m/s. 
C)  0 m/s. 
D)  29.4 m/s. 
E)  19.4 m/s.

Question 14

The acceleration due to gravity near the surface of the Moon is about one-sixth of the value near the Earth's surface. If a rock were dropped from equal heights on the Moon and Earth, the time it would take the rock from the Moon to hit the ground would be

Accepted Answer

A)  six times longer than on Earth. 
B)  the square root of six times longer than on Earth. 
C)  the same time as on Earth. 
D)  the square root of six times shorter than on Earth. 
E)  six times shorter than on Earth. 
A)  six times longer than on Earth. 
B)  the square root of six times longer than on Earth. 
C)  the same time as on Earth. 
D)  the square root of six times shorter than on Earth. 
E)  six times shorter than on Earth.

Question 15

A man standing on a bridge throws a stone horizontally with a speed of 20 m/s. The stone hits the water below 2.5 s later. The bridge is

Accepted Answer

A)  44.1 m high. 
B)  60.1 m high. 
C)  30.6 m high. 
D)  20.3 m high. 
A)  44.1 m high. 
B)  60.1 m high. 
C)  30.6 m high. 
D)  20.3 m high.

Question 16

Suppose you throw a ball vertically downward with a speed of 10 m/s. Neglecting air friction, what would be the speed of the ball one second later?

Accepted Answer

A)  -9.8 m/s2 
B)  9.8 m/s2 
C)  15 m/s 
D)  19.8 m/s 
E)  24.8 m/s 
A)  -9.8 m/s2 
B)  9.8 m/s2 
C)  15 m/s 
D)  19.8 m/s 
E)  24.8 m/s

Question 17

Neglecting friction, if a Cadillac and Volkswagen start rolling down a hill together, the heavier Cadillac will get to the bottom

Accepted Answer

A)  before the Volkswagen. 
B)  after the Volkswagen. 
C)  at the same time as the Volkswagen. 
A)  before the Volkswagen. 
B)  after the Volkswagen. 
C)  at the same time as the Volkswagen.

Question 18

For a bullet fired horizontally, its ___________ velocity will retain a constant non-zero value until it is stopped.

Accepted Answer

The answer of For a bullet fired horizontally, its ___________...

Question 19

Which of the three curves show the speed of an object that is beginning to experience significant air resistance?

Accepted Answer

A)  Object U 
B)  Object G 
C)  Object K 
A)  Object U 
B)  Object G 
C)  Object K

Question 20

The acceleration due to the Earth's gravity, in English units, is 32 ft/s2. In the absence of air friction, a ball is dropped from rest. Its speed on striking the ground is exactly 60 miles/hr. For what time interval was the ball falling? (There are 5280 feet in one mile.)

Accepted Answer

A)  5 s 
B)  6.1 s 
C)  4.125 s 
D)  2.75 s 
A)  5 s 
B)  6.1 s 
C)  4.125 s 
D)  2.75 s

Which of these graphs would be correct for the speed of a ball thrown upward?

The time of flight of a projectile, fired horizontally over level ground, is independent of its horizontal _________________.

One day while measuring acceleration with his pulse as a timing source, Galileo became so excited that his pulse rate increased. His results for acceleration that day were probably

Which of the curves in the figure best shows the speed of an object falling from rest without air friction?

If air resistance can be ignored, which of the following graphs will be a straight line for a falling object?

During batting practice, two baseballs have the same speed when leaving the bat of Babe Ruth. One ball goes over the outfield fence for a home run, and the other can be caught by an infielder. The difference between the two swings is that the home run ball starts out _________ to 45 $\degree$ .

Assuming g = 10 m/s² and that air resistance is negligible, in 1/2 second a ball dropped from rest will fall

A football is kicked at an angle, giving it a horizontal velocity of 25 m/s. At the highest point in its path, the football will have a velocity of m/s and a horizontal acceleration of ___ m/s².

A bullet is fired straight down from a hovering helicopter. If we neglect air friction, then the velocity of the bullet

In order to find the depth of a well, you drop a stone into it and time its fall. It hits the water after falling for 1.5 s. The depth of the well is about

A ball is thrown straight up. It reaches its highest point and then falls back. Which of the following is the correct statement?

A ball is thrown straight up with an initial velocity of 10 m/s. After 3 seconds its velocity will be

The acceleration due to gravity near the surface of the Moon is about one-sixth of the value near the Earth's surface. If a rock were dropped from equal heights on the Moon and Earth, the time it would take the rock from the Moon to hit the ground would be

A man standing on a bridge throws a stone horizontally with a speed of 20 m/s. The stone hits the water below 2.5 s later. The bridge is

Suppose you throw a ball vertically downward with a speed of 10 m/s. Neglecting air friction, what would be the speed of the ball one second later?

Neglecting friction, if a Cadillac and Volkswagen start rolling down a hill together, the heavier Cadillac will get to the bottom

For a bullet fired horizontally, its ___________ velocity will retain a constant non-zero value until it is stopped.

Which of the three curves show the speed of an object that is beginning to experience significant air resistance?

The acceleration due to the Earth's gravity, in English units, is 32 ft/s². In the absence of air friction, a ball is dropped from rest. Its speed on striking the ground is exactly 60 miles/hr. For what time interval was the ball falling? (There are 5280 feet in one mile.)

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

Exam 3: Falling Objects and Projectile Motion

Which of these graphs would be correct for the speed of a ball thrown upward?

The time of flight of a projectile, fired horizontally over level ground, is independent of its horizontal _________________.

One day while measuring acceleration with his pulse as a timing source, Galileo became so excited that his pulse rate increased. His results for acceleration that day were probably

Which of the curves in the figure best shows the speed of an object falling from rest without air friction?

If air resistance can be ignored, which of the following graphs will be a straight line for a falling object?

During batting practice, two baseballs have the same speed when leaving the bat of Babe Ruth. One ball goes over the outfield fence for a home run, and the other can be caught by an infielder. The difference between the two swings is that the home run ball starts out _________ to 45 °\degree° .

Assuming g = 10 m/s2 and that air resistance is negligible, in 1/2 second a ball dropped from rest will fall

A football is kicked at an angle, giving it a horizontal velocity of 25 m/s. At the highest point in its path, the football will have a velocity of ________ m/s and a horizontal acceleration of ___________ m/s2.

A bullet is fired straight down from a hovering helicopter. If we neglect air friction, then the velocity of the bullet

In order to find the depth of a well, you drop a stone into it and time its fall. It hits the water after falling for 1.5 s. The depth of the well is about

A ball is thrown straight up. It reaches its highest point and then falls back. Which of the following is the correct statement?

A ball is thrown straight up with an initial velocity of 10 m/s. After 3 seconds its velocity will be

The acceleration due to gravity near the surface of the Moon is about one-sixth of the value near the Earth's surface. If a rock were dropped from equal heights on the Moon and Earth, the time it would take the rock from the Moon to hit the ground would be

A man standing on a bridge throws a stone horizontally with a speed of 20 m/s. The stone hits the water below 2.5 s later. The bridge is

Suppose you throw a ball vertically downward with a speed of 10 m/s. Neglecting air friction, what would be the speed of the ball one second later?

Neglecting friction, if a Cadillac and Volkswagen start rolling down a hill together, the heavier Cadillac will get to the bottom

For a bullet fired horizontally, its ___________ velocity will retain a constant non-zero value until it is stopped.

Which of the three curves show the speed of an object that is beginning to experience significant air resistance?

The acceleration due to the Earth's gravity, in English units, is 32 ft/s2. In the absence of air friction, a ball is dropped from rest. Its speed on striking the ground is exactly 60 miles/hr. For what time interval was the ball falling? (There are 5280 feet in one mile.)

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

During batting practice, two baseballs have the same speed when leaving the bat of Babe Ruth. One ball goes over the outfield fence for a home run, and the other can be caught by an infielder. The difference between the two swings is that the home run ball starts out _________ to 45 $\degree$ .

Assuming g = 10 m/s² and that air resistance is negligible, in 1/2 second a ball dropped from rest will fall

A football is kicked at an angle, giving it a horizontal velocity of 25 m/s. At the highest point in its path, the football will have a velocity of m/s and a horizontal acceleration of ___ m/s².

The acceleration due to the Earth's gravity, in English units, is 32 ft/s². In the absence of air friction, a ball is dropped from rest. Its speed on striking the ground is exactly 60 miles/hr. For what time interval was the ball falling? (There are 5280 feet in one mile.)