Final Review Unit 2-3

The sum of all forces acting on an object and direction

• Contact Force
• Balanced Force
• Unbalanced Force
• Net Force

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NGSS.HS-PS2-1

Ted is trying to move a fridge through his house, he gets stuck on a carpet and even though he is pushing the fridge, it is not moving. What force is acting against him?

• gravity
• friction
• air
• mass

Ted is trying to move a fridge through his house, he gets stuck on a carpet and even though he is pushing the fridge, it is not moving. What force is acting against him?

• gravity
• friction
• air
• mass

A leftward force is applied to a crate to push it across the floor at a constant speed. Which is the correct force diagram?

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Tags

NGSS.HS-PS2-1

A hockey puck glides to the right across the ice at a constant speed.

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NGSS.MS-PS2-2

Which one needs a greater net force to move, a kilogram of feathers or a kilogram of iron? 

• feathers 
• iron
• same
• depends on their friction

Tags

NGSS.HS-PS2-1

According to Newton's second law, if you increase the force applied to an object :

• it accelerates more
• it doesn't move
• you get more inertia
• it decelerates

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NGSS.HS-PS2-1

What law of motion does this picture represent?

• Newtons 1st law
• Newtons 4th law 
• Newtons 3rd law 
• Newtons 2nd law

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NGSS.MS-PS2-1

What Newtons law does this picture represent

• Newtons 2nd law 
• Law of gravity 
• Newtons 1st law
• Newtons 5th law

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NGSS.HS-PS2-1

NGSS.HS-PS2-3

An object is resting motionless on a surface. According to Newton's 1st Law, the object will only start to move if

• the net forces on the object equal zero
• an unbalanced force is applied to the object
• the upward force of the object is equal to its acceleration
• two forces that are equal and opposite are applied to the object

Tags

NGSS.MS-PS2-2