A bowler throws a cricket ball at a speed of 120 km/h. How long does this ball take to travel a distance of 20 metres to reach the batsman?

Solution:

Speed of the ball = 120 km/hours = 120 × (5/18) metres/second = 33 1/3 m/s

Time taken by the ball to travel 20 metres= 20/33 1/3 seconds = (20/(100/3)) seconds

= 60/100

= 0.6 seconds = 0.01 minutes

✦ Try This: A bowler throws a cricket ball at a speed of 144 km/h. How long does this ball take to travel a distance of 22 yards to reach the batsman?

1 yard = 0.914 metres

22 yards = 22 × 0.914 = 20.12 metres

Speed of the ball = 144 km/hours = 144 × (5/18) metres/second = 40 m/s

Time taken by the ball to travel 20.12 metres = 20.12/40 seconds = 0.503 seconds

= 0.008 minutes

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 13

NCERT Exemplar Class 8 Maths Chapter 10 Problem 99

A bowler throws a cricket ball at a speed of 120 km/h. How long does this ball take to travel a distance of 20 metres to reach the batsman

Summary

A bowler throws a cricket ball at a speed of 120 km/h. The ball takes 0.6 seconds or 0.01 minutes to travel a distance of 20 metres to reach the batsman

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