Speed, Velocity , & Acceleration

TRUE or FALSE Acceleration can be positive (accelerating) or negative (deaccelerating).

• TRUE

• FALSE

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

If you slow down on your bicycle, you accelerate.

• TRUE

• FALSE

Tags

NGSS.3-PS2-1

What makes velocity different from speed?

• time

• distance

• direction

• mass

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

• TRUE

• FALSE

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.

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

• Acceleration occurred because speed decreased.

• Acceleration occurred because you changed directions.

Ture Or False Acceleration describes the change in velocity over time.

• TRUE

• FALSE

What two things must you know to determine speed?

• distance and direction

• direction and time

• speed and direction

• distance and time

Which of the following is a measurement of velocity?

• 16 m east

• 25 m/s2

• 55 m/h south

• 60 km/h

A school bus drives 35 mph down the street and slows as it approaches the stop sign. This is an example of

• acceleration

• speed

• velocity

• force