Physics Review

Unbalanced forces ALWAYS result in which of the following?

• acceleration

• constant velocity

• constant speed & direction

• inertia

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NGSS.MS-PS2-2

Which of the following is NOT an example of unbalanced forces?

• a turning car

• a car breaking to a stop

• a car traveling 60 mph constantly

• a car accelerating down a hill

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NGSS.MS-PS2-2

Which of the following is NOT an example of unbalanced forces?

• a skateboard speeding up down a ramp

• a skateboard popping up in the air, then back down

• a skateboard slowing down to a stop

• a motionless skateboard

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NGSS.MS-PS2-2

Which of the following is NOT an example of balanced forces?

• a roller coaster moving forward at a constant speed of 10 m/s

• a roller coaster sitting motionless while passengers get on

• a roller coaster going around a loop at a constant speed

Tags

NGSS.MS-PS2-2

Which of the following describes the motion of the door?

• increasing speed to the left

• constant speed to the left

• increasing speed to the right

• constant speed to the right

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NGSS.MS-PS2-2

What change in motion will occur if Cindy & Alex increase their force to 40N?

• the door's motion to the right will slow

• the door's motion will stop

• the door's motion will immediately shift to the left

• the door's motion to the left will slow down

Tags

NGSS.MS-PS2-2

Which of the following would naturally result in acceleration? *multiple answers*

• going uphill or downhill

• a flat stretch of unchanging road

• a change in surface friction

• a turn

Tags

NGSS.MS-PS2-2

• 1 & 3

• 2 & 3

• 2 & 4

• 3 & 4

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NGSS.MS-PS2-2

• The speed of the cart decreases as the cart rolls down the ramp because of friction between the cart and ramp.

• The speed of the cart increases as the cart rolls down the ramp because the force acting on the cart is greater than the force of gravity.

• The speed of the cart increases as the cart rolls down the ramp because the forces acting on the cart are unbalanced.

• The speed of the cart decreases as the cart rolls down the ramp because the forces acting on the cart are balanced.

Tags

NGSS.MS-PS2-2

What acceleration results from 63N of force being applied to a 9kg ball?

• 567 m/s²

• 7 m/s²

• 72m/s²

• 54 m/s²

Tags

NGSS.MS-PS2-2