Unit 1 Physics Preview/Pre-Test

Front

What is Newton's 1st Law of Motion?

Back

An object in motion stays in motion, and an object at rest stays at rest unless acted upon by an external force.

Front

What does it mean for forces to be balanced?

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion.

Front

What does it mean for forces to be unbalanced?

Back

Unbalanced forces are not equal, causing a change in motion or acceleration of an object.

Front

What is friction?

Back

Friction is the force that opposes motion between two surfaces in contact.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object.

Front

How can you identify a decrease in speed on a graph?

Back

A decrease in speed is represented by a downward slope on a distance-time graph.

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity.

Front

What is the formula for calculating acceleration?

Back

Acceleration = (Final Velocity - Initial Velocity) / Time.

Front

What is the relationship between force, mass, and acceleration?

Back

According to Newton's 2nd Law, Force = Mass x Acceleration.

Front

What is gravity?

Back

Gravity is the force that attracts two bodies towards each other, commonly experienced as the force that pulls objects towards the Earth.