Force Test Review

A group of students is playing tug-of-war. The students on both sides of the rope are pulling with equal force so that the rope is not moving. This is an example of

• unbalanced forces

• balanced forces

• acceleration

• displacement

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Force

A firefighter feels the hose pushing backwards onto him as he uses it to put out a fire. What is the most likely cause of this?

• The hose material is very elastic

• Since the hose is at rest, it tends to stay at rest

• The force exerted on the water equals the mass of the water times its acceleration

• The escaping water exerts an equal and opposite force on the hose

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Newton's 3rd Law

If the same force is applied to each of the balls pictured below, which one will have the LEAST acceleration?

• Ball A

• Ball B

• Ball c

• Ball D

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Newton's 1st Law

Which of the following is measured in Newtons?

• weight

• momentum

• mass

• acceleration

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Newton's 2nd Law

The upward force on an object falling through the air is ____.

• air resistance

• momentum

• inertia

• gravity

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Force

Newton's 1st Law

The relationship among mass, force, and acceleration is explained by ____.

• Law of Conservation of Momentum

• Newton's 1st Law of Motion

• Newton's 2nd Law of Motion

• Newton's 3rd Law of Motion

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Newton's 2nd Law

According to Newton’s laws, for any object, the greater the force that's applied to it, the greater its ____ will be.

• acceleration

• inertia

• gravity

• size

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Newton's Laws

The size of the gravitational force between two objects depends on their ____.

• frictional forces

• inertia

• masses and the distance between them

• speed and direction

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Force

Newton's 2nd Law

An astronaut is planning a trip to a newly-discovered planet. According to the Law of Universal Gravitation, the astronaut's weight on the new planet will be greater than his weight on Earth if:

• the new planet has less gravity than Earth

• the new planet has the same gravity as Earth.

• the new planet has more gravity than Earth

• the gravity of the planet doesn't matter. Weight is the same everywhere in the universe.

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Newton's 2nd Law

"To every action there is an equal and opposite reaction" describes which law?

• Law of Inertia

• Newton's 1st Law of Motion

• Newton's 2nd Law of Motion

• Newton's 3rd Law of Motion

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Newton's 3rd Law