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.

Avery likes to walk 30 feet in 10 seconds. What is her speed?

• 3 feet/sec
• 6 feet/sec
• 10 feet/sec
• 2 feet/sec

Tags

NGSS.MS-PS3-1

65mi/hr South is an example of...

• Speed
• Velocity
• Acceleration
• Direction

A stopped car begins moving and reaches a speed of 25m/s in 5 seconds. What is its acceleration?

• +25m/s²

• -0m/s²

• +5m/s²

• 5m/s

Tags

NGSS.MS-PS2-2

If you travel 7.5 km and walk for 1.5 h, what is your average speed?

• 5 km/h
• 11.25 km/h
• 0.2 km/h

What two things must you know to determine speed?

• distance and direction

• direction and time

• speed and direction

• time and distance

Tags

NGSS.MS-PS3-1

What is your acceleration if you are riding your bike at 9 km/hr, and 10 minutes later your speed is 6 km/hr.

• 0.3 km/hr

• 30 km/hr

• 0.3 km/hr/hr

• 300 km/hr

Speed = _______________

• Distance + time

• Distance – time

• Distance x time

• Distance / time

This occurs when an object speeds up, slows down, or changes direction.

• Speed

• Velocity

• Acceleration

Tags

NGSS.MS-PS3-5

Velocity = _______________

• Speed – direction

• Speed + direction

• Speed x direction

• Speed / direction