Unit 1 Lesson 2 Review - Newton's Laws 1 & 2

Newton's first Law is called the Law of

• Acceleration

• Motion

• Friction

• Inertia

Newton's first Law states that unless a force acts upon it, an object at rest will stay ________, and a moving object will continue in a straight line at the same ____________.

• at rest, acceleration

• put, speed

• at rest, speed

• in motion, speed.

A _______ is a push or pull that changes an object's motion.

This is a force that makes something stop or slow down.

• Mass

• Resistance

• Friction

• Brakes

This is a force that tries to pull everything to the ground.

• Inertia

• Friction

• Mass

• Gravity

More mass = more inertia

• True

• False

Newton's 2nd Law states: A force causes an object to accelerate, and the more mass an object has, the more _______ you need to get the same acceleration.

_______ is the total force acting upon an object.

• Net Force

• Total force

• Acceleration

• Sum forces

A unit of force is called a _________.

When a force pulls 70 to the left and 40 to the right on an object, the net force on the object is _____.

• 110

• 70 L

• 30 R

• 30 L