Physics Review

How many Laws of Motion did Isaac Newton create?

• 1

• 3

• 5

• 10

What is Newton's First Law of Motion?

• For every action there is an equal and opposite reaction

• An objects resistance to change its motion

• Heavy objects take more force to move

• An object at rest stays at rest

What is Inertia?

• An objects resistance to change its state of motion

• Used to determine the acceleration of an object

• For every action there is an opposite reaction

• More mass means more force is needed to move an object

What is Newton's Second Law of Motion?

• Objects in motion tend to stay in motion

• For every action there is an opposite reaction

• The more mass something has the more force it takes to move it. (F=ma)

• Objects at rest stay at rest unless acted upon by a force

If I know the mass and amount of force on a object which formula can I use to find the acceleration?

• multiply the mass and acceleration (F=ma)

• divide the force by the acceleration (M=f/a)

• add the force and mass together (A=f+m)

• divide the force by the mass (A=f/m)

If an object has a force of 10N acting on it and a mass of 5kg, what is its acceleration?

• 5 m/s2

• 2kg

• 2 m/s2

• 15 m/s2

If an object is accelerating at a rate of 5m/s2 and has a mass of 5kg, how much force must be acting on it?

• 10 m/s2

• 25N

• 10N

• 25kg

The amount of force on an object is measured with.....

• Newtons

• meters per second

• kilograms

• meters per second squared

What is Newtons Third Law of motion?

• Objects at rest tend to stay at rest

• For every action there is an equal and opposite reaction

• More mass means more force is needed to move an object

• The Law of Inertia

When an object is sitting still, this means there are no forces currently acting on it.

• True

• False