Ch 1 Laws of Motion Physics Review

Which of the following devices on a car can be used to cause the car to accelerate?

• the gas petal
• the brake
• the steering wheel
• all choices listed

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

Suppose you were driving east and suddenly hit your brakes to avoid a cat in the road. As you come to a stop your acceleration is directed

• west
• east
• nowhere, acceleration is a scalar
• downwards

Tags

NGSS.MS-PS2-2

Gustav throws a ball perfectly horizontal at the same time Cole drops a ball from the second story stairwell. Ignoring air resistance, the time Cole's ball hits the ground will

• be earlier than when Gustav's ball hits the ground
• be equal to the time Gustav's ball hits the ground
• be later than when Gustav's ball hits the ground
• not depend upon how high it started falling from

Tags

NGSS.MS-PS2-4

Suppose you go from the earth to a planet where the acceleration of gravity is 3 m/s/s. On the new planet your mass will

• be 1/3 its value on Earth
• be 9 times its value on Earth
• not change
• be 3/10 its value on Earth

A car starts from rest and accelerates at 4 m/s/s. How much time will it take the car to reach a speed of 20 m/s?

• 10 seconds
• 4 seconds
• 8 seconds
• 5 seconds

Tags

NGSS.HS-PS2-1

Suppose you push horizontally on the wall of a building. For you to do work on the wall, which of the following need to happen?

• the wall lifts up

• the wall moves away from you

• the wall moves sideways

• nothing needs to happen

In order to do a positive amount of work you must

• exert a force and just move
• exert a force or move
• change an object's position
• exert a force and move in the direction of the force

Tags

NGSS.MS-PS3-5

Mrs. Burton would prefer to go to Mars daily for her Weight Watchers check in. Which is the correct statement concerning mass, weight and related things.

• My mass is still essentially unchanged but my weight is more on earth

• My weight is still essentially unchanged but my mass is less on earth

• Neither my weight nor mass have changed much

• My weight and mass have both changed significantly

Tags

NGSS.MS-PS2-4

You are riding a bicycle into a strong head wind, but manage to keep moving in a straight line at a constant speed. The net force on you is

• in the direction of your motion
• downward due to weight
• zero
• in the direction the wind is pushing you (backwards)

Tags

NGSS.MS-PS2-2

An object experiences a net force of 25 N and has an acceleration of 5 m/s/s. The objects mass must be 

• 20 kg
• 125 kg
• 30 kg
• 5 kg

Tags

NGSS.MS-PS2-2