Acceleration

Front

What does it mean when a change in velocity is negative?

Back

The object is slowing down.

Front

Determine where the car has no acceleration: A car shortly after a stoplight turns green, A car approaching a red light, A car with the cruise control set at 80 km/h, A car turning a curve at a constant speed.

Back

A car with the cruise control set at 80 km/h

Front

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

Back

m/s²

Front

Final velocity of a rocket with initial velocity 12 km/s, acceleration 2 km/s², time 4 seconds?

Back

20 km/s

Front

Which of the following is not accelerating?

• a ball being juggled
• a woman walking at 2.5 m/s along a straight road
• a satellite circling Earth
• a braking cyclist

Back

a woman walking at 2.5 m/s along a straight road

Front

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

Back

9 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 car at a stop sign speeds up to 10 mph over 2 seconds. What was its initial velocity?

Back

0