Effects of Force

A car is traveling in one direction at a constant speed. Which of the following is true?

• Acceleration is increasing.

• The car is not accelerating.

• The speed of the car is increasing.

• Friction is equal to the forward force.

What causes a change in motion?

• Matter

• Speed

• Mass

• Force

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What can you use to measure a force needed to pull a box across a tabletop?

• Spring Scale`

• Balance`

• Bathroom Scale`

• Graduated Cylinder

To go faster down a slide, what might you do?

• Put a rough surface on the slide.

• Make the slide smoother.

• Make the slope flatter.

• Put on heavy clothes.

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A spring scale can be used to measure the force of the Earth’s gravity pulling down on the mass of an object, or its __________.

• amount of matter

• state of matter

• speed

• weight

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What factor does the force of gravity depend on?

• Time

• Mass

• Speed

• Volume

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What decreases friction?

• A smooth surface

• A rough surface

• More speed

• Normal force

What type of force does this skydiver rely on to slow down the rate of falling?

• Gravity

• Inertia

• Air Resistance

• Acceleration

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On Jupiter, what effect would you expect on your weight?

• Your weight would increase.

• Your weight would decrease.

• Your mass would increase.

• Your mass would decrease.

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Which statement is true about gravity?

• It acts only on objects that are touching.

• It can act over a distance.

• It is a pushing force.

• Only very large objects have it.

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