You throw a ball up into the air. While the ball is in the air, the total energy of the ball-Earth system...

Is transfered out of the system

At terminal velocity...

The forces of air resistance and gravity cancel out

Gravity is stronger than air resistance

Air resistance is stronger than gravity

Compare the force of gravity and acceleration due to gravity on object A with 10kg mass and object B with 5kg mass.

Acceletaion same, force gravity double on object A

Accleration and force double on object A

Force same, acceleration double on object A

Force and acceleration same for both

Why do all objects fall to the ground with the same acceleration?

Objects with more mass experience more force due to gravity, but more mass makes objects accelerate less

They have the same force of gravity

Air resistance balances out gravity

Objects with less mass experience more force due to gravity, but less mass makes objects accelerate less

Why do we represent forces using vectors?

Forces have direction and magnitude

Forces are perpendicular to velocity

Forces have direction, magnitude, and curve

For objects at rest like the books on this table, how does the weight of objects compare the strength of the normal force exerted on them?

Weight and normal force are equal and balanced

Weight and normal force are equal and a force pair

Gravity Review

Authored by Elias Heard

Physics

9th Grade

NGSS covered

Used 20+ times

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44 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which object has more gravitational potential energy, a 10kg object at a height of 10m or a 10kg object at a height of 5m?

The object at 10 m

Same GPE

The object at 5m

Depends on horizontal velocity

Tags

NGSS.MS-PS3-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When an object is moving at a constant speed the forces on it are...

Balanced

More than friction

Unbalanced

Greater in the direction of motion

Tags

NGSS.MS-PS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When an object is accelerating the forces on the object are...

Unbalanced

Less in the direction of motion

Greater in the direction of motion

Balanced

Tags

NGSS.MS-PS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the weight of a 100kg object?

980N

100kg

100N

9.8N

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Compare weight and mass

Mass is how much matter an object has, weight is how much gravity pulls the object

Weight is how much matter an object has, mass is how much gravity pulls on the object

They are the same thing

DUMMY_CHOICE

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

I am on a mission in deep space, far away from any planets, stars, or other large space objects. Select which statement is true:

My mass has not changed but I weigh almost nothing

My weight has not changed but I have almost no mass

My weight and mass are unchanged

I have almost no mass and almost no weight

Tags

NGSS.MS-PS2-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

You are in an elevator and it begins to accelerate upward. Compare the forces on you

Normal force > Weight

Depends on your starting velocity

Weight > Normal force

Normal force = Weight

Tags

NGSS.MS-PS2-2

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Gravity Review

Which object has more gravitational potential energy, a 10kg object at a height of 10m or a 10kg object at a height of 5m?

When an object is moving at a constant speed the forces on it are...

When an object is accelerating the forces on the object are...

What is the weight of a 100kg object?

Compare weight and mass

I am on a mission in deep space, far away from any planets, stars, or other large space objects. Select which statement is true:

You are in an elevator and it begins to accelerate upward. Compare the forces on you

You are in an elevator and it begins to accelerate downward. Compare the forces on you

You are in an elevator going at a constant speed. Compare the forces on you

You throw a ball up into the air. While the ball is in the air, the total energy of the ball-Earth system is...

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