PHYSICS FINAL REVIEW

The number of significant figures in 40,035.20 is _____.

• 4

• 5

• 6

• 7

The number of significant figures in 0.0047020 is _____.

• 3

• 4

• 5

• 7

Convert 50,000 millimeters into dekameters.

• 0.5

• 5

• 50

• 5,000

An object moving East begins to slow down after stopping at a traffic traffic light. Make a statement concerning its acceleration.

• 1. The car is deccelerating, and its acceleration is positive.

• 1. The car is deccelerating, and its acceleration is negative.

• 1. The acceleration is zero.

• A statement cannot be made using the information given.

A cart that starts at rest experiences a constant acceleration of 4 m/s². How far does the cart need to travel to reach a speed of 16 m/s?

• 4 m

• 8 m

• 16 m

• 32 m

Tags

NGSS.MS-PS3-1

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

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

The shows Tom’s journey going from home to the bus stop. During the segment of 70 to 100 seconds, which direction is Tom moving?

• 1. Tom is moving away from his house.

• 1. Tom is moving toward his house.

• 1. Tom is standing still.

• Cannot be determined.

Tags

NGSS.MS-PS3-1

A ball is thrown horizontally with an initial velocity of 15 m/s from the top of a tower 75 m high. What is the initial horizontal velocity of the ball?

• 0 m/s

• 3.9 m/s

• 14.5 m/s

• 15 m/s

12. The diagram shows a ball projected horizontally with an initial velocity of 50 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?

• eastward

• westward

• upward

• downward

Tags

NGSS.MS-PS2-4

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

• continuously increases

• remains a non-zero constant

• first decreases then increases

• remains zero