Force and Motion

Why does a crumpled piece of paper land before a flat sheet of paper? 

• Gravity exerts more force on the crumpled paper. 
• There is more air resistance on the flat paper. 
• The crumpled paper is heavier
• The flat paper is lighter.

Which has the least friction?

• snowboard on a snowy hill
• running on the playground
• sandpaper on wood
• a racer on a track

Which of the following statements is true? 

• Balanced forces cause a change in motion. 
• Unbalanced forces cause a change in motion. 
• Forces do not effect the change in motion. 

In the image, which of the person and their bikes will get down a hill faster? 

• The boy because he is younger
• The woman because she is stronger
• The boy because he has a greater mass which applies a greater force
• The woman because she has more mass and applies a greater force

If these boys are pulling with the same amount of force.  What will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

Tags

NGSS.MS-PS2-1

Which object requires the most amount of force to move it 5 meters? 

• golf ball
• soccer ball
• bowling ball
• tennis ball 

A soccer ball is rolled across four difference surfaces with the same force.  Which surface will slow the movement of the soccer ball most? 

• tile floor
• paved road
• grassy field 
• cement sidewalk 

A student is holding a yo-yo in his hand.  He is ready to release it, but has not done so yet. What kind of energy does the yo-yo have? 

• kinetic energy 
• potential energy 
• both kinetic and potential energy
• neither kinetic nor potential energy

Energy of motion is also known as ______________ energy. 

• kinetic
• magnetic 
• tension
• friction

Which object has kinetic energy?

• a ball lying on the floor
• a stopped merry-go-round
• a dog running through the yard
• a car parked in a garage