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Standard 3.2A

Authored by Caroline Williams

Physics

10th - 12th Grade

Used 8+ times

Standard 3.2A
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12 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

State Newton's 1st Law

An object at rest tends to stay at rest and an object in motion tends to stay in motion at a constant velocity unless acted upon by a net force.

An object in motion tends to stay in motion at a constant velocity unless acted upon by a net force.

An object at rest tends to stay at rest and an object in motion tends to stay in motion at a constant velocity.

An object at rest tends to stay at rest and an object in motion tends to stay in motion unless acted upon by a net force.

2.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

State Newton's 2nd Law. Check all statements which form the law.

The acceleration of an object is directly proportional to the force acting on the object and is in the same direction as the force

The acceleration of an object is directly proportional to the net force acting on the object and is in the same direction as the net force

The acceleration of an object is proportional to the mass of the object.

The acceleration of an object is inversely proportional to the mass of the object.

The net force acting on an object is directly proportional to the mass of the object

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

State Newton's 3rd Law.

For every action there is always an equal and opposite reaction

Whenever one object exerts a force on a second object, the second object exerts a force on the first

Whenever one object exerts a force on a second object, the second object exerts an equal force on the first

Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

State the Conservation of Momentum

In the absence of an external net force, the total momentum of a system does not change.

In the absence of an external net force, the total momentum of a closed system does not change.

The total momentum of a closed system does not change.

In the absence of an internal net force, the total momentum of a closed system does not change.

5.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Explain in terms of conservation of momentum why a heavy cannon has a smaller recoil velocity than the cannon ball. Select all that apply

Initial momentum of the system is zero

Final momentum of the system is zero

Cannon and cannon ball have equal but opposite momenta

Mass of cannon is greater than the mass of the cannon ball

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the key concept necessary to solving every problem involving collision, objects pushing off each other, firing projectiles, etc.

Total initial momentum of all objects = total final momentum of all objects

Total initial velocity of all objects = total final velocity of all objects

Total initial force of all objects = total final force of all objects

Total initial acceleration of all objects = total final acceleration of all objects

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An apple falls from a tree. Which is larger, the force of gravity of the Earth on the apple, or the apple on the Earth? Why does the Earth appear not to move?

Earth on Apple; because the force of the apple on the Earth is so small

Apple on Earth; because we are standing on the Earth and move with it

Same force; the mass of the Earth is so much greater than the mass of the apple

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