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6. The speedometer of a car measures (a) average speed(b) instantaneous speed(c) distance(d) both (a) and (c)7. In a race, a girl runs 100 metres in 20 seconds. Her average speed is(a) 5 m/s(b) 10 m/s(c) 15 m/s(d) 20 m/s8. Salma takes 25 minutes from her house to reach her school on a bicycle. The bicycle has a speed of 2m/s, the distance between her house and the school is(a) 3 km(b) 2 km(c) 25km(d) 4 km9. A simple pendulum takes 42 s to complete 20 oscillations, the time period of the pendulum is. (a) 2.2s(b) 2.3s(c) 2.1s(d) 2.4s |
| Answer» 1. AVERAGE speed2.10m/s3.2km 4. 2.1s | |