Kinematics in One Dimension

A car travels 90 meters due north in 15 seconds. Then the car turns around and travels 40 meters due south.  What is the magnitude and direction  of the car's resultant displacement?  

• 40 metres, South
• 50 metres, South
• 50 metres, North
• 40 metres, North 

Describe the curve located on the graph between 0 seconds and 2 seconds.

• constant velocity

• constant acceleration

• standing still

• constant displacment

Describe the curve located on the graph between 2 seconds and 7 seconds.

• constant velocity

• constant acceleration

• standing still

• constant displacment

The graph above represents 4 jets velocity over a period of time. Which jet has constant velocity?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

What is the average acceleration during the first segment of the graph?

• 0 m/s²

• 5 m/s²

• 10 m/s²

• 20 m/s²

Tags

NGSS.HS-PS2-1

A trucker drives with an average velocity of 27 m/s towards the east on a perfectly straight highway. What will the trucker's displacement be after 2 minutes?

• 97 m; east

• 190 m; east

• 1600 m; east

• 3200 m; east

What happened during A to B point?

• not moving
• increasing speed at a constant rate
• moving at a constant speed
• moving at 10 m/s² acceleration

Tags

NGSS.MS-PS3-1

What is happening between 3 seconds and 4 seconds?

• The object is moving in a negative direction.
• The object is returning to its starting position.
• The object is slowing to a stop.
• The object is changing direction.

 Every morning, Tom walks along a straight road from his home to the bus stop. Below, is a graph representing Tom’s trip to school.
- What is the distance covered through the second segment, which is between 50 seconds, and 70 seconds?

• 40 meters
• 60 meters
• 80 meters
• 20 meters

At 60 seconds, how far had this object traveled? 

• 0 m
• 10 m
• 20 m
• 40 m