Describing Motion Test Review

A dog's position relative to its owner through time is graphed below. Which of the following scenarios could be described by the position vs. time graph?

• The dog runs away from its owner at its top speed.

• The dog sits perfectly still several meters in front of its owner.

• The dog slowly trots toward its owner.

• The dog slowly approaches its owner then suddenly runs away.

Tags

NGSS.MS-PS3-1

Tyler kicks a soccer ball toward the opposite side of the field. If the ball moves at a constant speed, which graph shows the position of the ball relative to Tyler through time?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-1

Dr. Kibble is monitoring the position of a meteoroid as it approaches planet Earth. He observes it through a telescope every 5.0 minutes and records its position in the table below. Which of the following could be the graph of the meteoroid's remaining distance to Earth through time?

• 
• 
• 

Tags

NGSS.MS-PS3-1

Megan is waiting for the school bus. She sees it driving down the street straight toward her position. If the bus is moving at a constant speed, which graph shows the position of the bus relative to Megan through time?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-1

Marvin is standing at the front door of his house. He walks 10 meters to his mailbox, then walks 10 meters back to his front door.

What is Marvin's overall change in position (relative to his front door)?

• 20 meters

• 0 meters

• 10 meters

• 40 meters

Directions: Select ALL the correct answers.

A reference point is an object or location from which the movement of another object is determined. Which of the following could be a reference point?

• a person

• a point on a map

• a moving car

• a house

Randy is sledding down a hill away from his sister, Leslie, who is standing at the top of the hill. At first, Randy moves at a constant speed down a nearly flat part of the hill. Then, suddenly, the hill becomes much steeper, and Randy almost immediately starts moving at a much faster speed.

Which graph shows Randy's position as he moves away from his sister?

• 
• 
• 
• 

Aaron was riding his bicycle to school at a rate of 13 miles an hour down the street. As he got closer to school, he gradually slowed his bike until he stopped at the bike rack.

Which of the graphs below best represents the change in Aaron's position over time?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-1

Chip and Don are racing in go-karts. Chip is directly behind Don as they reach the straightaway. Both drivers are going the top speed of 25 mph. If Chip is the reference point, which statement correctly describes Don's motion relative to Chip?

• Don is moving at 25 mph.

• Don is not moving.

• Don is speeding up.

• Don is slowing down.

Tags

NGSS.MS-PS2-1

Emma drives down a hill in a soapbox derby racecar. Her speed over a 5.0-second time period is graphed below.

• a displacement of 9.0 meters.

• a speed of 5.0 meters per second.

• a position of 9.0 meters.

• a speed of 9.0 meters per second.

Tags

NGSS.MS-PS3-1