speed

Bill jogs 400 meters to Andy's house, turns around, and runs 400 meters back home.  He does so in 267 seconds.  What is Bill's average speed?

• about 3 m/s

• about 1.5 m/s

• 0

• about 4 m/s

What is the formula to calculate speed?

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

Kirstie drove for 24 min at a speed of 85 km/h to reach the museum from her home. How far was the museum from her home?

• 3.5 km

• 16.9 km

• 34 km

• 212.5 km

At what point is the object moving back to the starting point?

When was the object sitting still?

• between 5 and 6 seconds

• between 2 and 5 seconds

• between 1 and 2 seconds

• between 0 and 1 second

At what point is the speed the greatest?

• C-D

• B-C

• A-B

• D-E

What is happening to the object's speed in section D?

• Increasing speed

• Decreasing speed

• Constant speed

• Not moving

Which two factors does speed depend on?

• distance and direction

• direction and time

• distance and time

• distance, time and direction

Acceleration is a speeding up, slowing down or a change in direction. Is the following acceleration and if so, which one?

A swimmer has 10 meters left in the race and he is neck-in-neck with his competitor. He has a surge of adrenaline and pulls ahead to win.

• Yes, this is acceleration since the swimmer starts to speed up to pull ahead.

• Yes, this is acceleration since the swimmer uses the wall to change directions.

• No, this is not acceleration since there is no speeding up, slowing down, or change in direction.

total distance travelled divided by total time is...

• speed

• velocity

• acceleration

• average speed