Gravity Maths
Newton's Three Laws
Newton's Three Laws 2
MISC.
Using Newton's Laws
100

What is the gravity formula?

Fg = mg

Force of gravity = mass x gravitational strength

100

What is Newton's First Law of Motion?

An object moves at a constant velocity unless an unbalanced force acts on it.

100

A bug flies into a car's windshield. What kind of force will the the bug and windshield feel?

Equal forces
100

Yes?

No.

100

If a car moving at 50km/hr crashes into a wall and comes to a complete stop, how fast are the humans inside traveling?

50km/hr

Law of conservation of momentum

200

What are the units for the gravitational formula?

Fg = N

m = kg

g = N/kg

200

What is Inertia?

The tendency of an object to resist any change in its motion

200

What is the most common formula for Newton's second law of motion?

Fnet = m x a

200

What does it mean if someone has Sir in their name? (Sir Isaac Newton)

They were knighted by the british royal family. 

200

What is the scientific reason you get injured in a car crash?

You are still moving at whatever speed the car was going. When a human comes to a sudden stop they get injured. 

300

A squirrel has a mass of 0.5kg. What is its weight?

(0.5kg)(9.8N/kg) = 4.9N

300

What is Newton's Second Law of Motion?

An objects acceleration is the same direction as the net force on the object and is equal to the net force exerted on it divided by its mass

300

What is the net force on a dragster car with a mass of 900kg it is acceleration is 32.0m/s2 west?

28,800 N West

300

Describe the forces in this scenario:


Unbalanced

300

What do seat belts and airbags try to do for you? (scientific reason)

They slow down your velocity so you don't come to a sudden stop 

400

A boy weighs 400N. What is his mass?

40.82kg

400

What is Newton's Third Law of Motion?

When an object exerts a force on a second object, the second object exerts a force on the first that is equal in strength and opposite in direction

400

What are the correct labels for the newton's second law of motion equation?

Fnet = N + direction

m= kg

A = m/s2+ direction

400

Describe the forces in this scenario:


Balanced

400

If you drop a bowling ball and a feather in a vacuum, which one will hit the ground first?

They will hit at the same time.

500

An astronaut has a mass of 100kg and has a weight of 370N on Mars. What is the gravitational strength of Mars?

3.7N/kg
500

Why is it improper to say "For every action there is an equal and opposite reaction."?

That statement implies one force is causing the other but that is not the case. 

One force is not causing the second force, they occur at the same time. 

500

You push a wagon that has a mass of 12kg. If the net force on the wagon is 6N south, what is the wagon's acceleration?

0.5m/s2 South

500

What is an example of a centripetal force?

Earth Revolving around the sun, carnival ride
500

What do parachutes do for you? (scientific explanation)

They lower your terminal velocity to a safe velocity