Physics Multiple Choice

If a freely-falling object were somehow equipped with a speedometer on a planet where the acceleration due to gravity is 20 meters per second squared, then its speed reading would increase each second by

20 m/s

If a freely-falling object were somehow equipped with a speedometer, its speed reading would increase each second by about

10 m/s

A bullet is dropped from the top of the Empire State Building while another bullet is fired downward from the same place. Neglecting air resistance, acceleration is greatest for the

... is 9.8 meters per second squared for each

An object travels 8 meters in the first second of travel, 8 meters again during the second second of travel, and 8 meters again during the third second. Its acceleration is

0 meter per second squared

An object falls freely from rest on a planet where the acceleration due to gravity is 20 metes per second squared. After 5 seconds, the object will have a speed of

100 m/s

Ten seconds after starting from the rest, a freely-falling object will have a speed of about

100 m/s

An object falls freely from rest on a planet where the acceleration due to gravity is 20 meters per second squared. After 5 seconds it falls a distance of

250 m

Ten seconds after starting from the rest, a car is moving at 40 m/s. What is the car's acceleration?

4.0 meters per second squared

One half second after starting from rest, a freely-falling object will have a speed of about

5 m/s

A ball is thrown upwards. What upward speed does the ball need to have to remain in the air for a total time of 10 seconds?

50 m/s

Starting from rest, a freely-falling object will fall in 10 seconds a distance of about

500 m

A bullet is fired straight down from the top of a high cliff. Neglecting air resistance, the acceleration of the bullet is

9.8 meters per second squared

If you drop an object, it will accelerate downward at a rate of 9.8 meters per second squared. If you throw it downwards, its acceleration (in the absence of air resistance) will be

9.8 meters per second squared

Disregarding air resistance, objects fall at a constant

acceleration

If an object falls with a constant acceleration, the velocity of the object must

continually change by the same amount each second

A ball is thrown upwards and caught when it comes back down. Neglecting air resistance, the speed with which it is caught is

the same as the speed it had when thrown upwards

As an object freely fall, its

velocity increases

An object is in free fall. At one instant, it is traveling at a speed of 50 meters per second. Exactly one second later, its speed is about

60 m/s

A car accelerates at 2 meters per second squared. What is its speed 3 seconds after the car starts moving?

6 m/s

A heavy object and a light object are dropped at the same time from rest in a vacuum. The heavier object reaches the ground

at the same time as the lighter object

If a freely-falling object were somehow equipped with an odometer to measure the distance it travels, then the amount of distance it travels each succeeding second would be

greater than the second before

A bullet is dropped into a river from a river from a very high bridge. At the same time, another bullet is fired from a gun, straight down towards the water. Neglecting air resistance, the acceleration just before striking the water

is the same for each bullet