Physical Science - Motion - Speed, Velocity and Acceleration

1. Which of the following statements about speed and velocity is correct?

• Velocity only describes an object’s rate of motion.
• Speed describes how an object is changing its velocity.
• Speed and velocity both describe how an object is speeding up.
• Only velocity includes the direction an object is traveling.

When a car goes around a corner at 20 mph, why do we say it  accelerates?

• The car is accelerating because of the velocity is constant
• The car accelerates because it's going 20 mph
• Cars always accelerate when they are in motion
• The car is accelerating because it's changing direction

The gees fly 23 mph to the south when they migrate for the winter. 

• speed
• velocity
• acceleration

Tags

NGSS.MS-PS3-1

The tornado is traveling northwest at 20 mph. 

• speed
• velocity
• acceleration

Tags

NGSS.MS-PS2-2

The Olympian swam 200 meters in 20 seconds. 

• speed
• velocity
• acceleration

Tags

CCSS.HSF.IF.B.6

CCSS.8.F.B.4

How far will a person go if they jog for 2 hours at a speed of 12 km/hr?

• 6 km
• 0.5 km
• 10 km
• 24 km

A runner races in the 100 meter dash.  It takes her 10 seconds to finish.  What is her average speed?

• 10 m/s
• 1000 m/s
• 100 seconds
• 10 seconds

Tags

CCSS.6.RP.A.3B

Shona cycles at an average speed of 8km/h. How far has she travelled if she cycles for 4 hours?

• 55km
• 32km
• 43km
• 32miles

Tags

CCSS.6.RP.A.3B

Which of the following is a unit for acceleration?

• km/s
• m/s²
• mi/hr
• ft

Velocity is different from speed because...

• Velocity is distance/time. Speed is displacement/time.

• Velocity is speed in a certain direction and can be positive or negative.

• Speed is velocity in a certain direction. Both can only be positive.

• Velocity is how much speed changes over time.

Tags

CCSS.HSN.VM.A.1