1st Semester Exam Review - Physical Science

Which of the following is NOT an example of acceleration?

• a bicycle rounding a corner at constant speed

• a helicopter steadily ascending in a straight line at constant speed

• a golf ball rolling to a stop

A vector is a quantity that has a. a frame of reference and magnitude. b. time and direction. c. magnitude and direction.

• a. a frame of reference and magnitude.

• b. time and direction.

• c. magnitude and direction.

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NGSS.HS-PS3-5

A car is driving down the highway. From which frame of reference does it appear to NOT be moving?

• a. a car driving at the same speed but going the opposite direction

• b. sitting inside the car

• c. an airplane flying overhead

You travel 30 kilometers west of your home and then turn around and start going back home. After traveling 10 kilometers east, what is your displacement from your home?

• 20 km

• 20 km west

• 40 km west

What is acceleration?

• the rate at which speed increases

• the rate at which displacement changes

• the rate at which velocity changes

A man walks around a track. As he walks around the curved part of the track, what happens to his speed and velocity?

• Neither his speed nor his velocity changes.

• His speed changes but his velocity does not.

• His speed does not change but his velocity does.

The SI unit of force is the

• joule

• kilogram

• Newton

The property of matter that resists changes in motion is called

• friction

• gravity

• inertia

Which of the following refers to the amount matter in an object?

• force

• mass

• Volume

Compared with the mass of a certain object on Earth, the mass of the same object on the Moon is

• less.

• more.

• the same.