Unit 4 Review

Front

A roller coaster accelerates from an initial velocity of 10 m/s to a final velocity of 20 m/s over 60 seconds. What's the acceleration?

Back

0.166 m/s²

Front

A car starts from rest at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car.

Back

5.7 m/s²

Front

The unit for Acceleration is usually m/s, m/s², m, s

Back

m/s²

Front

What makes velocity different from speed?

Back

direction

Front

You are riding your bike at 9 km/h. Ten minutes later, your speed is 6 km/h. Why did acceleration occur?

Back

Acceleration occurred because speed decreased.

Front

Why did acceleration occur while riding your bike around the block at a constant speed of 11 km/h?

Back

Acceleration occurred because you changed directions.

Front

What two things must you know to determine speed?

Back

distance and time

Front

Which of the following is a measurement of velocity? 16 m east, 25 m/s2, 55 m/h south, 60 km/h

Back

55 m/h south

Front

A school bus drives 35 mph down the street and slows as it approaches the stop sign. This is an example of

Back

acceleration

Front

What is this object's SPEED at 2 seconds?

Back

5 m/s