Acceleration

Front

Acceleration is

Back

the rate at which velocity changes.

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.

Back

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

Front

Which of the following is a unit for acceleration?

Back

m/s²

Front

A plane lands on the runway and slows from 210.6 m/s to 8.33 m/s in 46.8 s. What is the plane's acceleration in m/s²?

Back

-4.32 m/s²

Front

Calculate the final velocity of a rocket that travels for 4 seconds, has an initial velocity of 12 km/s, and an acceleration of 2 km/s².

Back

20 km/s

Front

A golf ball accelerates off a tee at 15m/s², changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?

Back

3.3 seconds

Front

A golf ball is thrown downward from the roof of the Sears Tower (442 m above street level). Neglecting air resistance, it accelerates at 9.8 m/s² and lands on the pavement after 9.2 s with a final speed of 93.0 m/s. What was the ball's initial speed?

Back

2.84 m/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

The light turns red, and you ease to a halt. Checking your stopwatch, you see that you stopped in 4.5 seconds. Your acceleration was 0.34 m/s² in a direction opposite to your original velocity. What was your original speed?

Back

1.53 m/s