Gravity and Motion

Presentation

•

Physics

•

University

•

Practice Problem

•

Easy

David Elm

Used 5+ times

FREE Resource

14 Slides • 22 Questions

Poll

If you drop a basketball (about 0.6 kg) and a heavy medicine ball (5 kg) from the same height, just above your head, which would hit the ground first?

The Basketball

The Medicine Ball

The Same Time

The result is random

Poll

Was your prediction about the basketball and medicine ball correct?

Yes

Maybe

Poll

When a ball is dropped and falls from just above someone's head...

The ball moves at constant speed as it falls.

The ball speeds up as it falls.

The ball slows down as it falls.

Poll

How does the gravitational force on the medicine ball compare to the gravitational force on the basketball?

There is more gravitational force on the medicine ball.

The gravitational force is the same.

There is more gravitational force on the basketball.

Poll

How did you do on those last two questions?

I got both right.

I got one right.

I got both wrong.

Poll

Do you think it's easy to see acceleration?

Yes

Maybe

Poll

If you drop a penny from the top of the Empire State Building and it hit someone on the head, the result would be...

They would barely feel it.

It would hurt, but not be lethal.

It would most likely be lethal.

Poll

How was your prediction for the lethality of the penny?

I knew it!

I guess right

I didn't know and guessed wrong.

I thought I know, but I was wrong.

Multiple Choice

Why wasn't the penny lethal when dropped from that height?

It's so light that it doesn't have enough of an impact.

Air friction keeps it from falling too fast.

It spins to fast that it acts like a helicopter.

Poll

How fun does indoor skydiving look?

Super fun!

It's okay

Not for me.

Poll

A stack of balls is dropped. What do you think will happen?

They bounce together, with the same motion for each bounce.

The balls scatter in every direction.

The top ball goes way higher than the drop height.

Poll

How will the slinky drop?

The bottom end will fall first.

The top end will fall first.

Both ends will fall together.

The ends will collapse in the middle.

Poll

How was your prediction for the slinky drop?

Nailed it!

I was wrong.

I'm still confused.

Multiple Choice

How did the slinky drop?

The bottom end will fall first.

The top end will fall first.

Both ends will fall together.

The ends will collapse in the middle.

Poll

Is there gravity in space?

Yes.

Maybe.

No.

Yes, but only a little bit.

Poll

Can you "feel" zero g's in a plane?

Yes.

No.

Maybe.

Poll

Which description of gravity would you use?

Gravity is a downwards force.

Gravity is an attraction towards larger objects.

Gravity is the attraction of masss to all other mass.

Poll

Are mass and weight the same thing?

Yes

Maybe

Multiple Choice

If something has a lot of inertia, then it is...

hard to get moving and hard to stop

always very heavy

always moving fast

completely unstoppable

Multiple Choice

When you put an unbalanced force on an object, it always...

Stays the same speed.

Accelerates

Rotates

Slows down.

Poll

Does the Moon pull on the Earth?

Yes.

No.

Maybe.

Multiple Choice

How does the size of the pull of the Earth on the Moon compare to the size of pull of the Moon on the Earth?

The Earth has a greater pull.

The Moon has a greater pull.

It depends on the position.

The two pulls are the same size.

If you drop a basketball (about 0.6 kg) and a heavy medicine ball (5 kg) from the same height, just above your head, which would hit the ground first?

The Basketball

The Medicine Ball

The Same Time

The result is random

Show answer

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