Speed, Velocity, Acceleration

If you slow down on your bicycle, you accelerate.

• TRUE
• FALSE

Tags

NGSS.MS-PS3-1

NGSS.MS-PS2-2

NGSS.MS-PS3-5

if you ride your bicycle at a constant speed, you cannot accelerate.

• TRUE
• FALSE

Changing the speed and changing the direction of your bicycle are both examples of acceleration.

• TRUE
• FALSE

Tags

NGSS.MS-PS2-2

You are riding your bike at 9 km/h. Ten minutes later, your speed is 6 km/h.

• Acceleration occurred because speed increased.
• Acceleration occurred because speed decreased.
• Acceleration occurred because you changed directions.

You ride your bike around the block at a constant speed of 11 km/h.

• Acceleration occurred because speed increased.
• Acceleration occurred because speed decreased.
• Acceleration occurred because you changed directions.

You ride your bike in a straight line at a constant speed of 10 km/h.

• Acceleration occurred because speed increased.
• Acceleration did not occur because neither speed nor direction changed.
• Acceleration occurred because you changed directions.
• Acceleration occurred because speed decreased.

Which of the following is NOT an example of acceleration?

• a person jogging at 3 m/s along a winding path
• a car stopping at a stop sign
• a cheetah running 27 m/s east
• a plane taking off

What two thiings must you know to determine speed?

• distance and direction
• direction and time
• speed and direction
• time and distance

What makes velocity and acceleration differ from speed?

• time
• distance
• direction
• time2

If a student rides her skateboard on a straight road and does not speed up or slow down, she is traveling with a

• constant acceleration
• constant velocity
• positive acceleration
• negative acceleration