Physics Final Review

The number of significant figures in 32,100 is _____.

• 2

• 3

• 4

• 5

Convert 25,000,000 millimeters into hectometers.

• 250 hm

• 25,000 hm

• 2,500,000 hm

• 2,500,000,000,000 hm

An object moving East begins to slow down as it approaches a traffic light. Make a statement concerning its acceleration.

• The car is decelerating, and its acceleration is positive.

• The car is decelerating and its acceleration is negative.

• The acceleration is zero.

• A statement cannot be made using the information given.

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NGSS.HS-PS2-1

Which is a vector quantity?

• distance

• speed

• mass

• force

Which line on the velocity graph shows an object moving at a constant velocity?

• A

• B

• C

• D

The diagram to the right shows a ball projected horizontally with an initial velocity of 20 m/s east, off a cliff 100 m high. (Neglect air resistance) During the flight of the ball, what is the direction of its vertical velocity?

• downward

• upward

• westward

• eastward

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NGSS.HS-PS2-4

For general projectile motion with no air resistance, the horizontal component of a projectile’s acceleration _____.

• continuously increases

• remains a non-zero constant

• first decreases then increases

• remains zero

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NGSS.HS-PS2-1

Action-reaction forces from Newton’s Third Law _____.

• sometimes act on the same object

• always act on the same object

• always act on different objects

• may form right angles

Tags

NGSS.MS-PS2-1

When the rocket engines on a spaceship are suddenly turned off, while traveling in empty space where there are no external forces, the spaceship will _____.

• stop immediately

• slowly slow down, and then stop

• go faster and faster

• move with constant speed

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

• decrease

• increase

• remain the same

• cannot be determined

Tags

NGSS.HS-PS2-1