Science Fusion Unit 15

What is a force?

• a push or pull
• speed or acceleration 
• potential or kinetic energy
• balanced or unbalanced force

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When objects remain in the same place, it is called...

• gravity
• friction
• balanced force
• unbalanced force

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An unbalanced force is when objects move in one direction because the force is greater from that direction.

• true
• false

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Why is it harder for the boy in Image B to get down the hill?

• Motion
• Friction
• Work
• Displacement

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Which type of force resists motion?

• Friction

• Gravity

• Pull

• Push

A baseball pitcher throws a baseball. It does not reach the catcher. What should the pitcher do to make a ball reach the catcher?

• Increase the force used when throwing the ball

• Decrease the force used when throwing the ball

• Reduce the gravity exerted on the ball

• Increase the gravity exerted on the ball

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What should you do to make a toy car roll faster down a ramp?

• Push it with more force

• Push it with less force

• Remove the force of gravity

• Use magnetism to push it down

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Newton's 3rd Law states that for ever action there is an equal and opposite ________.

• reaction

• satisfaction

• fraction

• transaction

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A force that causes an object to slow down when it touches another object is _________.

• gravity

• friction

• inertia

• Newton

Newton's 2nd Law says the acceleration of an object depends on its _______ and ______. (Choose two answers)

• force or applied force

• weight

• gravity

• mass

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