Forces and Newton's Laws Review

A push or a pull.

• Force
• Friction
• Weight
• Gravity

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

What force causes downward acceleration?

• applied force

• normal force

• friction force

• gravity force

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What is the net force?

• 800 N

• 600 N

• 400 N

• 400 N down

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Forces always act in equal and opposite pairs.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• Newton's 4th Law

An object at rest or moving at a constant speed in a straight path will continue to do so until a net force acts upon it.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• Newton's 4th Law

An object acted upon by a net force will accelerate in the direction of the force according to the equation 
Acceleration = net force/mass

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• Newton's 4th Law

When there is a change in motion?

• When the forces are balanced.
• When the forces are unbalanced.
• Never.
• When the forces are equal.

A truck and a car are both broke down on Eagle Parkway. Which one would require the least amount of force to push out of the way and why?

• The car, because it has less mass

• The truck, because it has more mass

• The car, because it has smaller tires

• The truck, because it has bigger tires

When all the forces on an object are equal and opposite, & the net force is zero, that's...

• balanced forces
• unbalanced forces
• terminal velocity
• reaction forces

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NGSS.MS-PS2-2

A cannonball with a mass of 0.5 kg is flying at an acceleration of 10 m/sec/sec. What is it's force?

• 50 Newtons
• 5 Newtons
• 20 Newtons
• 9.5 Newtons

Tags

NGSS.MS-PS2-2