Force & Newton's laws

Any push or pull on an object.

• force
• velocity 
• inertia
• momentum

What will happen if you're in a car, and the driver slams on the brake?

• a. You will stop moving.

• b. You will continue moving forward.

• c. You will gradually slow down.

• d. You will speed up.

Which law applies?

• 1st
• 2nd
• 3rd

What Unit do we Measure Force in? 

• Newtons
• Joules
• Mass
• Kilograms

Which law is also known as the Law of Inertia?

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law

What is Newton's 2nd Law?

• Every action has an equal and opposite reaction

• An object at rest stays at rest, an object in motion stays in motion.

• F = ma

• Friction

True or False. Acceleration of an object is directly proportional to the net force acting on it

• True

• False

Your car has a mass of 2500 kg and a force of 5000 N. How fast will it accelerate?

• 20 m/s²

• 0.5 m/s²

• 2 m/s²

• 120 N

If the man pushes with an equal amount of force, which object will accelerate more?

• Car because it has more mass

• Lawnmower because it has less mass

• Car because it has less mass

• Lawnmower because it has more mass

Find how much force the man will need to exert to move the car.

• 5000 N

• 50 N

• 20,000 N

• 500 N