Motion and Force quiz

The SI unit for distance is the

• acre.

• meter.

• kilogram.

• centiliter.

Which diagram represents balanced forces?

• 
• 
• 
• 

What is the average speed of a boat that travels 57 kilometers in 3 hours?

• 171 km/h

• 60 km/h

• 54 km/h

• 19 km/h

Which type of friction do you use when you put on the brakes to stop a bike?

• static friction

• stopping friction

• rolling friction

• sliding friction

If you use an arrow to represent velocity, what does the head of the arrow show?

• speed

• distance

• direction

• none of the above

Why does engine oil help prevent an engine from overheating?

• It causes chemical reactions that absorb energy.

• It reduces friction between moving parts.

• It has a higher melting point than metal.

• It makes the engine run more slowly.

What does ∆v/∆t represent?

• speed

• velocity

• acceleration

• none of the above

You would weigh less on the moon than on Earth because

• you would have less mass on the moon.

• the moon has weaker gravity than Earth.

• the moon has a thinner atmosphere than Earth.

• all of the above

Which of the following is the best definition of deceleration?

• zero acceleration

• constant acceleration

• changing acceleration

• negative acceleration

Examples of objects that make use of elastic force include

• hair scrunchies.

• pogo sticks.

• trampolines.

• all of the above