Study Guide for Module 7 - Exploring Creation With Physical Science

You push on a box and are unable to move it. What force opposes your push?

Static friction

State Newton's three laws of motion.

1)Newton's First Law-An object in motion (or at rest) will tend to stay in motion (or at rest) until it is acted upon by an outside force. 2)Newton's Second Law-When an object is acted on by one or more outside forces, the total force is equal to the mass of the object times the resulting acceleration. 3)Newton's Third Law-For every action, there is an equal and opposite reaction.

Friction

A force that opposes motion, resulting from the contact of two surfaces

kinetic friction

Friction that opposes motion once the motion has already started

static friction

Friction that opposes the initiation of motion

Which of Newton's laws is sometimes called the law of inertia?

Newton's first law

What force holds the nucleus of atoms together? a. electromagnetic b. strong c. gravitational d. weak

b. strong

A change in which of the following affects the weight of an object? a. air resistance b. friction c. acceleration due to gravity d. velocity

c. acceleration due to gravity

What is the weakest of the fundamental forces?

gravitational force

For every action there is a

reaction force

When baseball players hit the ball hard enough, their bats can sometimes break. What is exerting a force on the bat, causing it to break?

the ball

Inertia

the tendency of an object to resist a change in its velocity