8thCFA9: Velocity, Acceleration and Momentum

According to this graph, the black line is being compared to ___________ (the red line.)

• a constant speed

• a constant acceleration

• a change in speed

• a change in acceleration

Tags

NGSS.MS-PS3-1

According to this graph, between 0.75 hours and 1.25 hours, what was occurring?

• The object was traveling at a constant speed.
• The object was traveling at an accelerated speed.
• The object was traveling at an average speed.
• The object was stopped.

Tags

NGSS.MS-PS3-1

According to this graph, between 15 seconds and 20 seconds, the object was ____________.

• stopped
• traveling at a constant speed
• decelerating
• accelerating

Tags

NGSS.MS-PS3-1

Jack and Linda are arguing about a merry-go-round.  Jack said that the merry-go-round was accelerating.  Linda said that it was traveling at a constant velocity.  Who is correct?

• Linda
• Jack
• Both Linda and Jack
• Neither Linda or Jack

Tags

NGSS.MS-PS2-2

According to this graph, __________________.

• The object stops between 50 and 100 seconds
• The object changes direction between 50 and 100 seconds
• The object slows down between 50 and 100 seconds
• the object travels at a constant speed between 50 and 100 seconds

Tags

NGSS.MS-PS3-1

What do all 4 graphs have in common?

• The objects are traveling at a constant speed.
• The objects are traveling at the same speed.
• The objects are all accelerating.
• The objects have nothing in common.

Tags

NGSS.MS-PS3-1

The greatest momentum would be

• a 20 kg object traveling at 5 m/s/s
• a 10 kg object traveling at 50 m/s/s
• a 20 kg object traveling at 5 m/s
• a 10 kg object traveling at 50 m/s

To best determine the motion of an object, you would use a reference  point that is __________.

• not moving
• moving in the opposite direction
• moving with another object
• at least 10 meters away

Bob moves 20 steps north and 5 steps south.  His displacement is 

• 25 steps
• 5 steps
• 5 steps south
• 15 steps north

On Earth you have a mass of 40 kg and a weight of 100 lbs. You go to Planet X, which is one-fourth (1/4) the size of the Earth. On Planet X, your mass would be __________, and your weight would be ___________.

• 40 kg, 100 lbs

• 10 kg, 25 lb

• 40 kg, 25 lb

• 10 kg, 100 lb

Tags

NGSS.MS-PS2-4