Motion, Velocity and Acceleration

Acceleration occurs when an object changes its speed or ______.

• direction
• force
• inertia
• mass

Which runner stopped for a rest?

• Albert
• Bob
• Charlie

Which runner won the race?

• Albert
• Bob
• Charlie

How long did one of the runner's rest?

• 8 seconds
• 13 seconds
• 5 seconds
• 50 seconds

How fast is this object moving?

• 1 meter

• 1 meter /second

• 2 meters/second

• 4 seconds

Which is true about plot c?

• position is negative

• velocity is positive

• position is changing

What is the formula for calculating speed? 

• S=T/D
• S = D/T
• S= D X T

Bob ran the 50 meter dash. It took him 6.3 seconds. What was his average speed in meters/second?

• 7.9 m/s
• 0.1 m/s
• 50 m/s
• 6.3 m/s

A snowboarder was in a competition. It took her 53 seconds to ride down a 75 meter hill. What was her average speed in meters per second?

• 0.7 m/s
• 53 m/s
• 1.4 m/s
• 75 m/s

What is the formula used to calculate distance if you know the speed and the time?

• D = S X T
• D = S/T
• D = T/S