Q8 of 17 Page 156

Which of the following relations is correct?

i. Speed = Distance × Time


ii. Speed=


iii. Speed=


iv. Speed=

The correct expression is: Speed=


Once, we know the distance and time taken to travel the distance, the speed of any object can be calculated.


More from this chapter

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6

Salma takes 15 minutes from her house to reach her school on a bicycle. If the bicycle has speed of 2m/s, calculate the distance between her house and the school.

 7

Show the shape of the distance time graph for the motion in the following cases:

(i) A car moving with a constant speed


(ii) A car parked on a side road

 9

The basic unit of speed is:

i. km/min ii. m/min


iii. km/h iv. m/s

 10

A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. The total distance covered by the car is:

i. 100 km ii. 25 km


iii. 15 km iv. 10 km