Question

If the bowling speed shown in figure is 135km/h, then what does not it mean?​

Answer 1

D) The ball covers 149m in 4 sec.

JNV Ayodhya

Answer 2

Given : Bowling speed shown in figure is 135km/h

To Find :  Which one is not correct

A) The ball covers 37.5 m in 1 sec

B) The ball covers 75 m in 2 sec

C) The ball covers 112.5 m in 3 sec

D) The ball covers 149 m in 4 sec​

Solution:

Bowling Speed = 135 km/hr

1 km = 1000 m

1 hr = 3600 secs

Bowling Speed  in m/s  = 135 * 1000/3600

= 135 * 5 / 18

= 45 * 5 / 6

= 15 * 5 / 2

= 75/2  m/s

= 37.5  m/s

Hence Ball covers  75  m in 2 secs

Ball covers 37.5 m in 1 sec

37.5 * 3 =  112.5 m

37.5 * 4 = 150  m

Hence The ball covers 149 m in 4 sec is Incorrect

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