grade 9 motion

A change in velocity over time is

• Scalar
• Speed
• Acceleration
• Motion

Which graph shows an object not moving?

• A
• B
• C
• D

Morgan walks 10 miles South. Trevor walks 10 miles North in the same amount of time.  They have:

• Different average speeds
• Different velocities
• Same velocity
• Same motion

A car starts from a stoplight and is traveling with a velocity of 10 m/sec east in 20 seconds.  What is the acceleration of the car?

• .5 m/s/s
• .5 m/s
• 2 m/s/s
• 2 m/s

Tags

NGSS.HS-PS2-1

A trip to Cape Canaveral, Florida takes 10 hours. The distance is 816 km. Calculate  the average speed. 

• 8 km/hr
• 81.6 km/hr
• .012 km/hr
• 61.8 km/hr

A ball is rolled at a velocity of 12 m/sec.  After 36 seconds, it comes to a stop.  What is the   acceleration of the ball?

• 3 m/s/s
• -3 m/s/s
• .33 m/s/s
• -.33 m/s/s

Tags

NGSS.HS-PS2-1

Two cars are in motion for the same amount of time. What will determine which car covers more distance?

• the starting position of the each car
• the speed of each car
• the direction in which each car moves
• the length of the car

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

This graph shows

• An object speeding up
• An object slowing down
• An object stopped
• An object moving at constant speed

Tags

NGSS.MS-PS3-1

Speed is different from velocity because

• Velocity has a direction
• Speed uses Distance /Time
• Velocity doesn't include time
• Velocity doesn't include distance

Tags

CCSS.HSN.VM.A.1

Janet drives her car, which changes speed every second. Her car is therefore __________

• accelerating
• constant

Tags

NGSS.MS-PS2-2