Laws of Motion Quiz

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A force is

• a push
• a pull
• a push or a pull

Gravity is an example of

• a contact force.
• a non-contact force.
• a directional force.

If an arrow is used to show a force, the direction of the arrow always shows the direction the object will move when the force is applied.

• True
• False

The force of gravity between two objects with large masses will be greater than the force of gravity between two objects with smaller masses, all other things being equal.

• True
• False

Weight is the same as mass if you are at sea level.

• True
• False

Friction will never make an object go faster.

• True
• False

The direction of the friction force is opposite the direction of motion.

• True
• False

Friction is caused by...

• microscopic roughness of surfaces
• weak electrical charges attracting each other between surfaces
• both the microscopic roughness of surfaces and weak electrical charges

Forces acting in the same direction _______, forces acting in opposite directions ______.

• add, subtract
• subtract, add
• multiply, divide
• divide, multiply