Distance, Speed and Time

Round all answers to 1 decimal place.

Section A - Calculating speeds

1. 10.0 ms^-1
2. 5.0 ms^-1
3. 1.0 ms^-1
4. 2.0 ms^-1
5. 50.0 ms^-1
6. 75.0 ms^-1
7. 266.7 ms^-1
8. 1236.8 ms^-1
9. t = 4 x 3600 s = 14400 s, so answer = 27.8 ms^-1
10. t = 35280 s, so answer = 85.0 ms^-1
11. 300 000 000 ms^-1

Section B - Calculating distances

1. 180.0 m
2. 84.2 m
3. 510.0 km = 510 000.0 m
4. d = 0.001 x 4 x 24 x 3600 = 345.6 m

Section C - Calculating time

1. 2.0 s
2. s = 40 km/hr = 40000 metres/hr = 40000/3600 ms^-1
   answer = (35 800 / 40 000) x 3600 = 3222.2 s
3. s = 37.9 km/hr = 37 900 / 3600 ms^-1
   answer = 3 000 / 37 900 x 3600 = 285.0 s
4. 1200 / 330 = 3.6 s