Speed Calculations.
Answer the following Questions.
1. Determine the average speed of each of the following.
a) a racehorse wins the 3200m Melbourne Cup in a time of
3minutes 20 seconds (in m/s)
b) a kangaroo fleeing from a dingo, which covers a distance of
2.5 km in 3 minutes (in m/s)
c) Grant Hackett as he completes a 1500m training swim in 15
minutes (in km/h)
d) A mosquito that flies a distance of 2m in 4 seconds (in km/h)
2. An athlete completes a 1500m race in 870 seconds. Calculate
the athletes average speed in
a) m/s
b) km/h
3. 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) 5 km/h without stopping
b) 5 km/h for 10 hours each day
c) 1.5 m/s without stopping
4. How fast would a person have to walk to cover a distance of
400m in 80 seconds? Answer in km/h and m/s.
5. The Apollo 11 spacecraft, which carried the first men to walk on
the moon, took about 60 hours to travel the 380 000 km. What was
its average speed? Answer in km/h and m/s.