Physics Review

What effect does a rough surface have on a box that is being pulled along the sidewalk?

• It would reduce the amount of work that is performed.

• It would oppose (go against) the force that is being applied to the box.

• It would decrease the resistance between the forces that are pulling the box.

• It would help reduce the force of gravity when the box is pulled.

Tags

NGSS.MS-PS2-2

Tom is sitting in his parked car. The car next to him starts to back up. If Tom is using the car next to him as a reference point, what direction does his car appear to be moving?

• back

• forward

• left

• right

Mike was riding his bike at an average speed of 4 miles per hour. After 3 hours, how far had Mike traveled?

• 12 miles

• 1 mile

• 4 miles

• 20 miles

A soccer ball is rolling across the yard and eventually comes to a stop. What force caused the ball to slow down and eventually stop?

• friction

• gravity

• magnetic

• inertia

Tags

NGSS.MS-PS2-2

When a baseball player hits a ball with the bat, how is the energy transferred?

• from player to bat to ball

• from ball to player to bat

• from bat to player

• from bat to ball

Tags

NGSS.MS-PS3-5

NGSS.MS-PS2-1

Which statement best describes why carrying a stack of books means taht work is being done?

• a force is being exerted only on the stack of books

• the stack of books is moving over a distance without added force

• no force is being exerted on the stack of books or the person carrying the books

• a force is being exerted over a distance on the books and on the person carrying the stak of books

Tags

NGSS.MS-PS2-2

Ann wants to repaint her bedroom so she goes to Ace Hardware and buys multiple gallons of paint cans. Which type of simple machine would make it easy for Ann to open the paint cans?

• an inclined plane

• wheel and axle

• pulley

• lever

Axes and knives are made of two simple machines. What type of simple machine are they made of?

• wedge and pulley

• lever an inclined plane

• screw and inclined plane

• wedge and lever

No machine will ever be 100% efficient because some energy will always be lost because of ________.

• friction

• gravity

• faulty parts

• user error

Tags

NGSS.MS-PS3-5

______ energy is the energy of an object due to its position and ______ energy is energy due to its motion.

• kinetic; potential

• potential; kinetic

• potential; motion

• kinetic; stored

Tags

NGSS.MS-PS3-2