Average Acceleration

Front

A race car goes from 100 m/s to rest in 25 seconds. What is its acceleration?

Back

-4 m/s²

Front

A roller coaster accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds. What's the acceleration?

Back

16 m/s²

Front

A ball takes 5 seconds to roll up a slanted hill. It starts with a velocity of 2.5 m/s up the hill and is moving at 0.5 m/s when it reaches the top of the hill. What is the average acceleration?

Back

-0.4 m/s²

Front

Which of the following is a unit for acceleration? Options: km/s, m/s², mi/hr, ft

Back

m/s²

Front

Why does a car accelerate as it turns around a corner at a constant speed?

Back

Its direction changes

Front

Acceleration of an object happens when things ________

Back

All of the above

Front

How can acceleration be zero?

Back

car has constant speed and is traveling on a straight path

Front

A box sliding down a hill attains a velocity of 27 m/s in 3 seconds from rest. Find the acceleration.

Back

9 m/s²

Front

Does acceleration only occur when things speed up?

Back

False

Front

Which of the following is accelerating? Options: A cannonball sitting on the ground, A boat traveling at a constant speed in a straight line, A can being crushed under a person's foot, A car going around a curve at a constant speed

Back

A car going around a curve at a constant speed