FE 1.3 Acceleration QUIZ REVIEW

If a train is slowing down, it is accelerating.

• FALSE, it is changing direction.

• TRUE, it is accelerating because of the change in direction.

• FALSE, it is CONSTANT.

To find the ACCELERATION, you must calculate the change in VELOCITY divided by

• Distance

• Time

• Mass

A Merry-Go-Round turning at a constant speed of 5m/s is NOT accelerating.

• TRUE- It is NOT accelerating.

• FALSE-It's speed is zero.

• FALSE-It is accelerating.

A speed-time graph for a car's motion at a SPEED of 10 m/s.  The car's ACCELERATION during this time is also 10 m/s². False or True? ( see image)

• FALSE, because Speed is different from acceleration.

• TRUE, acceleration is the same as speed.

• FALSE, because speed is distance divided by acceleration.

A possible SI or METRIC BASE UNIT for ACCELERATION is ____________________.

• m/min2

• m/hr2

• m/s2

The rate at which the velocity of an object changes is the object's ________. 

• SPEED

• FINAL VELOCITY

• ACCELERATION

An airplane is accelerating at 8 m/s².  Each second its speed increases by _______ m/s.

• .8 m/s

• 8 m/s

• 80 m/s

An airplane is flying west at 200 km/h in .5 hour.  Two hours later, it is flying west at 300 km/h.  What is its average acceleration in km/hr? 

• 6.67 km/hr²

• 66.7 km/hr²

• 670 km/hr²

A jogger is moving from 10 m/s to 2 m/s as he goes on top of the hill in 4 seconds. What is the Acceleration?

• 1 m/s²

• -1 m/s²

• -2 m/s²

• 2 m/s²

See graph: What happens from A to B?

• Positive acceleration-Increasing speed

• Positive acceleration-Decreasing speed

• Zero acceleration-Constant speed