Speed, Velocity and Acceleraton

Speed, Velocity and Acceleraton

Speed = Distance/Time

Also Distance= Speed X Time

Also Time = Distance x Speed

Multiple Choice

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

Multiple Choice

Kira jogs to a store 72 m away in a time of 36 s. What is Kira's average speed?

• 0.5 m/s
• 2 m/s
• 2 h

Multiple Choice

If the average speed of a car is 110 km/h, how long will it take the car to travel 715 km?

• 6 h
• 6.5 km/h
• 6.5 h

Multiple Choice

What is your average speed if you take 0.5 h to jog 4,000 m?

• 8000 m/h
• 2000 m/h
• 0.000125 m/h
• 800 m/h

Velocity is Speed with a Direction

Multiple Choice

47 mph southeast

• Speed
• Velocity
• Acceleration

Multiple Choice

Find the velocity of a truck that travels 75 miles north in 2.5 hours.

• 187.5 mph north
• 30 mph north
• 300 mph north
• 200 mph north

Multiple Choice

When you know both the speed and direction of an object's motion, you know the

• average speed of the object
• acceleration of the object
• distance the object has traveled
• velocity of the object

Acceleration

Final Speed - Starting Speed divided by Time

Multiple Choice

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

• 24 m/s²
• 18 m/s²
• 16 m/s²
• 16 m/s

Multiple Choice

A car accelerates from 15 m/s to 60 m/s in 30 seconds.  What is its acceleration?

• 2 m/s2
• 3 m/s2
• 1.5 m/s2
• 0.75 m/s2

Multiple Choice

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

• 0.7m/s2
• 7m/s2
• 14m/s2
• none of the above

Velocity is Speed with a Direction