Newton's Law Quiz Review

_________________: an object’s resistance to change in motion

What force is necessary to change an object’s motion (i.e. make it move OR stop it?) Hint: there are two options that work!

• Interior

• Strong

• Torque

• Outside

If you are in a car that stops suddenly, what will your body continue to do?

• Stay still

• Jerk forward at the same speed

• Stop immediately

• Have a sudden reaction

Why does this person fall off the back of the truck when the car starts moving?

• Because he's too heavy

• Because the car is too fast when it drives away

• Because he was at rest and will stay at rest even if the car moves

• Because he is in motion to start off with

What is the equation for Newton’s 2nd Law?

• Force= mass x acceleration

• Acceleration = force ÷ mass

• Force = mass ÷ acceleration

• Mass = Force ÷ acceleration

If an object’s mass increases, what happens to its force?

• Increase

• Decrease

• No change

• Depends on the object

Which requires more force to change its motion: a light object OR heavy object?

• Light object

• Heavy object

A football has a mass of 0.43 kg and an acceleration of 0.75 m/sec, what is its force?

Equation: F= ma

A baby has a mass of 3.4 kg and is crawling at an acceleration of 0.5 m/sec. What is its force?

Equation: F= ma

According to Newton's 3rd Law, for every action, there is an equal and opposite _____________________.

• Action

• Response

• Force

• Reaction