Question

4. If the speed of a boy is 30 km per hour, then what is the distance traveled by him in 45 seconds ? O 375​

Answer 1

Given:

Speed v = 30 km/hr

Time t = 45 s.

To Find:

Distance travelled.

Solution:

Speed = 30 km/hr

1 km = 1000 m

Thus, 30km = 30 × 1000 = 30000 m.

1 hr = 3600 seconds.

Thus,

30:km/hr = 30000/3600 m/s

= 8.33 m/s

Distance travelled = Speed × Time

= 8.33 × 45 = 374.85 which is approximately equal to 375 m.

The distance travelled by him is 375 m.