Newtonian Jeopardy!

Newtonian Jeopardy!1st is the Balance

2nd is the Force

3rd’s on a Collision Course

I Don’t like to Move it,

Move itPotpourri

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Describe a Force.

A Force is a push or pull on an object.

What are the 2 types of forces? Explain how they are different

and what they result in.

Balanced: equal but opposite forces create a net force of 0; there is no movement.

Unbalanced: unequal forces create a net force; object moves

State Newton’s 1st Law of Motion. What is it also

known as?

“An object at rest will remain at rest, and an object will remain in motion unless acted upon by an

unbalanced force.”

Also known as Inertia.

What property does Inertia depend on? Explain why.

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Final Jeopardy

Inertia depends on an object’s Mass. The greater the mass, the more

resistant an object is to change – it requires more force to move.

State Newton’s 2nd Law of Motion.

The net force on an object is equal to the product of its acceleration and its mass.

F = m x a

A 46kg cannonball is shot out of a cannon. If

it is accelerating at 5m/s2, what is the Force

acting on it?

F = m x a

F = 46kg x 5m/s2

F = 230 Newtons

How can Newton’s 2nd Law be rewritten to solve for Acceleration? For Mass?

F = m x a

a = F m

m = Fa

A pitcher throws a 0.5 kg softball. When the batter hits it, the force on the ball triples. What happens

to the acceleration? If the force on the ball after it is hit is 30N, what

is its acceleration?

If the Force is tripled and the mass is unchanged, than the acceleration is tripled.

a = F m

a = 30N0.5kg

a = 60m/s2Back to Menu

Final Jeopardy

What is Newton’s 3rd Law of Motion?

Newton’s 3rd states that for every action, there is an equal

and opposite reaction.

What is the formula for Momentum?

Momentum = Mass x Velocity

What does the Law of Conservation of

Momentum State?

The total Momentum of objects that interact does not change unless acted on by an outside force.

Which has more Momentum?

A 6kg sledgehammer swung at 1.5m/s.

A 2.5kg hammer swung at 4m/s.

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Final Jeopardy

Which has more Power?

Momentum= 6kg x 1.5m/sMomentum = 9kg.m/s

Momentum= 4kg x 2.5m/sMomentum = 10kg.m/s

What is Friction?

Friction is the force that one surface exerts on another. Friction opposes motion.

What 2 factors does friction depend on?DAILY DOUBLE!

Friction depends on the types of surfaces involved and how hard they press

on one another.

Why does an oak leaf take longer to fall to the ground

than an acorn?

An oak leaf has a greater surface area, which means it

encounters more air resistance

What is Free Fall? What is the acceleration of an object in free fall? What is it called

when your free falling velocity has reached its

maximum speed?

Free Fall is when the only force acting on an object is gravity. The acceleration of an

object in free fall is 9.8m/s2. Maximum speed in this situation is called Terminal Velocity.

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Final Jeopardy

What does this diagram represent?

The diagram represents an unbalanced force with the net

force in the downward direction

The wagon of girl scout cookies you need to move has just too much inertia. Using Newton’s 2nd Law, how can you

move the wagon?

5 Point Bonus: What is a second way?

You can decrease the wagon’s mass by removing some cookies.

Or, you could reduce the friction on the wheels with ice or lubricant.

While you were floating in space taking pictures with your camera, a

small asteroid hit your ship and pushed it away from you. How can

you use Newton’s 3rd Law to get back to your ship?

By throwing your camera!Newton’s 3rd Law:

Action Reaction is = and opposite

The force you exert thrwing your camera is equal to the force the

camera exerts on you, moving you back towards your ship.

What does the gravity between two objects depend on? How can you increase /

decrease gravity?

The gravity between 2 objects depends on the Mass of the objects and their distance

from one another.

You can increase gravity by increasing mass / decreasing distance.

You can decrease gravity by decreasing mass / increasing distance.

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Final Jeopardy

_______ is famous for “discovering” __________ . His observations on objects in __________

revealed that acceleration due to gravity is _____ . His laws of ________ help us understand the behavior of objects. These rules, in order, are

________ , F = m x a, and __________ . It took until the 1900’s before these laws were improved

by _________.

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motion free fall conservation9.8m/s2 gravity Einstein

Momentum Newton inertia 4.9m/s

STOP

Newton is famous for “discovering” gravity. His observations on objects in free fall revealed that

acceleration due to gravity is 9.8m/s2. His laws of motion help us understand the behavior of objects.

These rules, in order, are inertia, F = m x a, and momentum. It took until the 1900’s before these

laws were improved by Einstein.