Acceleration, Gravity, 1D Motion Review

What are the units for Distance/Displacement?

• m
• m/s
• m/s2
• s

What are the units for time?

• m
• m/s
• m/s2
• s

What are the units for speed/velocity?

• m
• m/s
• m/s^2
• s

What are the units for acceleration?

• m
• m/s
• m/s2
• s

A ball is dropped off a cliff. 4 seconds later, it hits the water. What is the initial velocity of the ball?

• -9.8m/s
• -4m/s
• 0m/s
• -39.2m/s

A ball is dropped off a cliff. 4 seconds later, it hits the water. What is the acceleration of the rock?

• -9.8m/s^2
• -4m/s^2
• 0m/s^2
• -39.2m/s^2

A ball is dropped off a cliff. 4 seconds later, it hits the water. How long did it take the rock to hit the water?

• -9.8 s
• 4s
• 0s
• -39.2s

A ball is dropped off a cliff. 4 seconds later, it hits the water. Calculate the velocity when it hit the water. (Solve for final velocity)

• 45m/s
• 9.8m/s
• +39.2m/s
• -39.2m/s

A ball is dropped off a cliff. 4 seconds later, it hits the water. Calculate how far the rock fell. (Solve for distance the rock fell)

• -39.2m
• -9.8m
• -100m
• -78.4m

A truck's velocity at the top of a hill is 5m/s. 3 seconds later, it reaches the bottom of the hill with a velocity of 24m/s. What is the initial velocity of the truck?

• 3 seconds
• 24m/s
• 0m/s
• 5m/s