Newton's 1st and 2nd laws of Motion

What Unit do we measure Force in? 

• Newtons
• Joules
• Force
• Don't know

Which of Newton's laws is illustrated when a magician pulls a tablecloth out from under the dishes without disturbing them?

• first
• second
• third 
• fourth

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NGSS.MS-PS2-1

You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.

• 20N 
• 40N 
• 10N 
• 70N

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NGSS.MS-PS2-1

If a ball of cheese is fired into frictionless space, the amount of force needed to keep it going equals

• twice the force with which it was fired
• the same amount of force with which it was fired
• 1/2 the force with which it was fired
• zero, since no force is requires to keep it moving. 

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which has more Inertia? 

• Truck
• Ant
• A cat
• A skateboard

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NGSS.MS-PS2-2

A 20 kg bike accelerates at 10 m/s².  what was the force

• 25 N
• 200 N
• 20 N
• 10 N

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NGSS.MS-PS2-2

a push or pull

• inertia
• force
• movment
• friction

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

Suppose that a sled is accelerating at a rate of 2 m/s². If the net force is tripled then what is the new acceleration of the sled?

• 12 m/s/s
• 6 m/s/s
• 12 in/s/s
• 120 m/s/s

Tags

NGSS.MS-PS2-2

Which of Newtons laws  best explains why football teams have big, large, fast athletes.

• Gravity
• second law
• first law
• Third law

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NGSS.HS-PS2-1

A net force of 15 N is exerted on an encyclopedia to cause it to accelerate at a rate of 5 m/s². Determine the mass of the encyclopedia?

•  m = 3.0 kg
• m = 4.0 kg 
• m = 3.0 ml 
• m = 30.0 g

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NGSS.MS-PS2-2