Acceleration

Acceleration is defined as the RATE OF CHANGE OF

• displacement

• distance

• position

• velocity

Acceleration only takes place when things speed up.

• True: speeding up is a change in velocity, but slowing down is not.

• True: slowing down means an acceleration of zero.

• False: according to the equation, acceleration can never be positive.

• False: slowing down is a change in velocity and therefore is measured by acceleration.

Determine the motion of the car. Assume LEFT is - and RIGHT is +.

• speeding up in the negative direction

• moving at constant speed

• speeding up in the positive direction

• slowing down in the positive direction

• slowing down in the negative direction

Determine the motion of the car. Assume LEFT is - and RIGHT is +.

• slowing down in the negative direction

• constant velocity

• speeding up in the positive direction

• slowing down in the positive direction

• speeding up in the negative direction

Which graph represents zero acceleration (constant velocity)?

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1

The SI unit for acceleration is

• mph

• m/s

• m/s²

• s²

Select the option that describes negative acceleration.

• speeding up in the positive direction

• speeding up in the negative direction

• slowing down in the negative direction

• constant velocity

The picture of the position vs. time graph shows an object with...

• positive acceleration

• negative acceleration

• zero acceleration

Which of these is an example of acceleration (positive or negative)?

• A car coasts along at 40 km/hr

• A car is parked on the side of the road

• A speeding car brakes to stop

• A car speeds along at 100 km/hr

A car accelerates from rest to 70 m/s in 10 seconds. What is the acceleration?

• 0.7m/s²

• 7m/s²

• 14m/s²

• none of the above