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Year 10 Science – Motion (Speed and Velocity) Worksheet
Complete all questions and show all calculations for each
1. Write the formula used to calculate average speed and state what each part represents.SPEED = DISTANCE ÷ TIME
2. Explain the difference between speed and velocity.
3. Determine the average speed of each of the following:
A/ A racehorse that wins the 3200m Melbourne Cup in a time of 3 min 20 sec (answer in m/s) / B/ A kangaroo fleeing a dingo which bounds a distance of 2.5 km in 3 min (answer in m/s)
C/ A dolphin which keeps up with a boat for a distance of 2km for a time of 3 min (answer km/h) / D/ Keirin Perkins as he completes the 1500m in a time of 15 min (answer in km/h)
4. How long would it take you to walk from Melbourne to Sydney, a distance of 900 km, if you walked at
an average speed of:
a/ 5km/h without stopping / b/ 5km/h for 10 hrs each day / c/ 1.5 m/s without stopping
5. A swimmer swims the 100m breaststroke event in 1m 8s. The event is in a 50m pool. She finishes the event at the same end at which she started. If she begins the event swimming due north and takes 35 sec to swim the first 50m, calculate her:
a. Average speed for the whole
event / b. Average velocity for the
first 50 m / c. Average velocity for the whole event
6. In a 60km/h speed zone the police set up a digitector, placing 2 cables across the road, 5m apart. The time
taken for cars to cross both cables was recorded.
a. One car took 0.2 seconds to cross the cables. Was it speeding? If so by how much?