2023 Motion Exam Quizizz

Which of the following correctly identify the activities in the picture as potential or kinetic energy?

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A student walks for 2.0 hours and travels 5.0 km.  What is the average speed of the student in km/hr? 

• 10 km/hr

• 5 km/hr

• 2.5 km/hr

• 1.5 km/hr

A bus travels 20 km in 30 minutes.  What is the average speed of the bus in km per hour? (hint 30 minutes is .5 hr).

• 40 km/hr

• 20 km/hr

• .67 km/hr

• 1.67 km.hr

Answer explanation

You must see that it wants your answer in km per HOUR NOT MINUTES. That means you have to divide by .5 (because 30 minutes is ONE HALF of an hour).

This graph shows-

• An object not moving

• An object moving at a constant speed away from the origin.

• An object moving at a constant speed back to the origin.

• All of these.

When was the car moving the fastest?

• Between 0 and 2 minutes

• Between 8 and 10 minutes

• Between 2 and 4 minutes

• Between 6 and 8 minutes

Does the following statement accurately describe the graph?

A student walks 1.5 km to a friend’s house in 20 minutes. The two students then walk another 1.5 km to school in 40 minutes.

• Yes

• No

Which of the following inclined planes would require the least amount of force to push a cart up?

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• 
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• All of these

Using an inclined plane reduces the amount of force needed to lift an object, while increasing the -

• Gravity

• Force

• Distance

All of the following are examples of inclined planes except —

• Ramp

• Screw

• Slide

• Seesaw

Where on the roller coaster has the greatest kinetic energy?

• w

• x

• y

• z