Spring Semester Test Review

 $P\ =\ m\ \times\ v$  What is the momentum of a 6 kg object traveling at 2m/s? 

• 3 kg•m/s

• 12 kg•m/s

• 24 kg•m/s

• .33 kg•m/s

Tags

NGSS.MS-PS2-2

What is the net force acting on an object that feels a -70 N force to the left, a 30 N force to the right, and another 20 N force to the right?

• 120 Newtons to the left (-120 N)

• 120 Newtons to the right (120 N)

• 20 Newtons to the left (-20 N)

• 20 Newtons to the right (20 N)

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is the average speed of a sloth that travels 50 miles in 2 hours? 

• 100 miles/hour

• 25 miles/hour

• 12.6 meters/sec

• 200 miles/sec

Tags

NGSS.MS-PS3-1

 $Potential\ Energy\ =\ mass\ \times\ gravity\ \times\ height$  
 A 10 kg child jumps 10 meters in the air.  How much potential energy does the child have at the top of his jump?  (hint - gravity = 9.8  meters/second squared)

•  980 Joules

• 98 Joules

• 980 Newtons

• 98 Newtons

Determine how much kinetic energy a 2kg object has if it is moving with a velocity of 4 m/s.

(KE = ½ X mass X velocity squared or ½ mv2)

• 8 Joules

• 8 Newtons

• 16 Joules

• 16 Newtons

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What is the velocity of a wave with a wavelength of 2 m and a frequency of 8 Hz? (velocity = wavelength X frequency)

• 16 m/s

• 4 m/s

• .25 m/s

• 32 m/s

Tags

NGSS.MS-PS4-1

What is the wavelength of a wave that travels at a velocity of 20 m/s with a frequency of 4 HZ?

• 80 Joules

• 80 meters

• 5 Joules

• 5 meters

Tags

NGSS.MS-PS4-1

What is the frequency of a wave that travels at a velocity of 40m/s with a wavelength of 4 meters?

• 160 Hertz

• 160 Joules

• 10 Hertz

• 10 Joules

Tags

NGSS.MS-PS4-1

What is the speed of sound in air if a sound travels 5000 meters in 10 seconds?

• 500 miles/hour

• 500 meters/second

• 50,000 meters/second

• 50 miles/hour

The __________ is the unit of force.

• meter/second

• Joule

• Newton

• kg•m/sec

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2