#99 - Acceleration Practice

What is the formula to calculate speed?

• Speed = time/distance
• Speed = distance/time
• Speed = distance x time
• Speed = time x distance

Tags

NGSS.MS-PS3-1

A value that only has magnitude (a number)

• Scalar

• Vector

• Velocity

You are walking and start to slow down. Do you have acceleration? 

• yes
• no 

Tags

NGSS.MS-PS2-2

The rate that a car's velocity changes is its

• speed

• force

• gravity

• acceleration

A correct measure of velocity would be

• 300 m/hr

• 7,800 m/sec

• 40 km/hr north

Acceleration is defined as the CHANGE in

• time it takes for one place to move to another place.

• velocity of an object.

• distance divided by the time interval

• velocity divided by the time interval

A negative acceleration means that your object is _____. 

• not accelerating
• not moving
• speeding up 
• slowing down 

You are walking in a straight line at a constant speed. Do you have acceleration?

• no

• yes

A drag racer accelerated from 0 m/s to 200 m/s in 5 s.  What was the acceleration?

• 0 m/s
• 40 m/s²
• -40 m/s²
• 40 m/s

Tags

NGSS.MS-PS2-2

A roller coaster accelerates from an initial speed of 6.0 m/s to a final speed of 70 m/s over 4 seconds. What's the acceleration?

• 24 m/s²

• 18 m/s²

• 16 m/s²

• 16 m/s

Tags

NGSS.MS-PS2-2