Chapter 4 Test Linear Motion Physics

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36 questions
2

Speed is...

2

One possible unit of speed is

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When you look at the speedometer in a moving car, you can see the car's

2

Acceleration is defined as the CHANGE in

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Suppose you are in a car that is going around a curve. The speedometer reads a constant 30 miles per hour. Which of the following is NOT true?

2

A cyclist travels 13 meters in the 1st second of travel, 13 meters again during the 2nd second of travel, and 13 meters again during the 3rd second. Its acceleration is

2

Suppose an object is in free fall. Each second the object falls

2

A ball tossed vertically upward rises, reaches its highest point, and then falls back to its starting point. During this time the acceleration of the ball is always

2

As an object falls freely in a vacuum, its

2

In the absence of air resistance, objects fall at constant

2

A ball is thrown upwards and caught when it comes back down. In the absence of air resistance, the speed of the ball when caught would be

2

If you drop a feather and a coin at the same time in a tube filled with air, which will reach the bottom of the tube first?

2

If you drop a feather and a coin at the same time in a vacuum, which will reach the bottom of the tube first?

2

Consider drops of water leaking from a water faucet. As the drops fall they

2

The hang time (time one's feet are off the ground in a jump) for most athletes is

2

When a basketball player jumps to make a shot, once the feet are off the floor, the jumper's acceleration

2

When something falls to the ground, it accelerates. This acceleration is called the acceleration due to gravity and is symbolized by the letter g. What is the value of g on Earth's surface?

2

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

2

Acceleration is defined as

5

A jet on an aircraft carrier can be launched from 0.00 to 50.00 m/s in 2.00 seconds. What is the acceleration of the jet?

5

A peachfalls from a tree and 20 seconds later hits the ground. How fast is the peach falling when it hits the ground?

5

A crate falls from an airplane flying horizontally at an altitude of 1810m. Neglecting air drag, how long will the crate take to strike the ground?

5

If a projectile fired beneath the water, straight up, breaks through the surface at a speed of 14.0 m/s, to what height above the water will it ascend?

5

A caterpillar crawling up a leaf slows from 0.75 cm/s to 0.50 cm/s at a rate of -0.05 cm/s². How long does it take the caterpillar to make the change?

5

Perhaps sometime in the future, NASA will develop a program to land a human being on Mars. If you were the first Mars explorer and discovered that when you dropped a hammer it took 0.68 s to fall 0.90 m to the ground, what would you calculate for the gravitational acceleration on Mars?

5

EXTRA CREDIT: In 1945, the Enola Gay, a B-29 bomber, dropped the atomic bomb from a height of 9450. m over Hiroshima, Japan. If the plane carrying the bomb were traveling with a horizontal velocity of 67.0 m/s, how far horizontally would the bomb have traveled between the point of release and the point where it exploded 513 m above the ground? (To avoid being above the bomb when it exploded, the Enola Gay turned sharply away after the bomb’s release.)

5

The Kentucky Derby, the first leg of horse racing’s Triple Crown, was won on May 5, 2007 by Street Sense with a time of 120.17s. If the race covers 2011.25m, what was Street Sense’s average speed in m/s?

2

For the following graph, find the following: velocity

2

For the following graph, find the following: distance travelled

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For the following graph, find the following: time

2

For the following graph, find the following: initial velocity

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For the following graph, find the following: final velocity

2

For the following graph, find the following: distance travelled

2

For the following graph, find the following: maximum velocity

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For the following graph, find the following: minimum velocity

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For the following graph, find the following: time