Speed Formative

What is the formula to calculate speed?

• S = t/d
• S = d/t
• S = d x t
• S = t x d

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

What is this graph showing?

• Constant Speed

• Acceleration (speeding up)

• Negative Acceleration (slowing down)

• No motion

What is happening at D?

• Stationary

• Negative Acceleration

• Fast steady speed; moving away from the starting position

• Slower steady speed; moving away from the starting position

What is happening at E?

• Stationary (At rest)

• Nothing

• Fast steady speed; moving away from the starting position

• Steady speed; returning to start position

What is happening at A?

• Stationary (At rest)

• Negative Acceleration

• Slower steady speed; moving away from the starting position

• Steady speed; returning to start position