Kinematics Quiz Practice

A motorist is driving at 25 m/s when a child runs out into the street. She reacts in 0.5 seconds and applies the brakes to slow down at a rate of 4.0 m/s² before coming to a stop.

What is the driver's initial velocity?

• 0 m/s

• 0.5 s

• -4.0 m/s²

• 25 m/s

• We don't know

A motorist is driving at 25 m/s when a child runs out into the street. She reacts in 0.5 seconds and applies the brakes to slow down at a rate of 4.0 m/s² before coming to a stop.

How would you describe the driver's motion during the first 0.5 seconds?

• At rest

• Constant velocity

• Constant acceleration

• Quantum tunneling

A motorist is driving at 25 m/s when a child runs out into the street. She reacts in 0.5 seconds and applies the brakes to slow down at a rate of 4.0 m/s² before coming to a stop.

Calculate the distance the car travels during the first 0.5 seconds.

• 0 m/s

• 12.5 m

• 4.0 m/s²

• 25 m

A motorist is driving at 25 m/s when a child runs out into the street. She reacts in 0.5 seconds and applies the brakes to slow down at a rate of 4.0 m/s² before coming to a stop.

What is the driver's final velocity?

• 0 m/s

• 0.5 s

• -4.0 m/s²

• 25 m/s

• We don't know

A motorist is driving at 25 m/s when a child runs out into the street. She reacts in 0.5 seconds and applies the brakes to slow down at a rate of 4.0 m/s² before coming to a stop.

What is the driver's rate of acceleration?

• 0 m/s

• 0.5 s

• -4.0 m/s²

• 25 m/s

• We don't know

A motorist is driving at 25 m/s when a child runs out into the street. She reacts in 0.5 seconds and applies the brakes to slow down at a rate of 4.0 m/s² before coming to a stop.

Calculate how long it takes the driver to come to a stop after applying the brakes.

• 0.5 s

• 12.5 m

• -4.0 m/s²

• 6.25 s

A motorist is driving at 25 m/s when a child runs out into the street. She reacts in 0.5 seconds and applies the breaks to slow down at a rate of 4.0 m/s² before coming to a stop.

Calculate the distance traveled during the time the driver is braking?

• 12.5 m

• 62.5 m

• 78 m

• 125 m

A ball is launched straight up vertically. The ball reaches it's maximum height in 3.0 seconds.

What is the velocity of the ball when it is at it's maximum height?

• 0 m/s

• 29.4 m/s

• -9.8 m/s²

• 44 m

A ball is launched straight up vertically. The ball reaches it's maximum height in 3.0 seconds.

What is the acceleration of the ball during it's time in the air?

• 0 m/s²

• 29.4 m/s²

• -9.8 m/s²

• -49 m/s²

A ball is launched straight up vertically. The ball reaches it's maximum height in 3.0 seconds.

Calculate the initial velocity of the ball.

• 0 m/s

• 29.4 m/s

• -9.8 m/s

• -49 m/s