Bowling Drill to Improve Your Bowling Speed: 5-7 Kmph

In a second ODI match between England and India Bhuwnesh kumar bowled his medium fast bowling. He starts his run up from the distance of 50m from the stumps (bowling end) and at the time of bowling a ball,his speed is 36(km)//(hr) and the speed of ball is 144(km)//(hr) . If his mass is 70 kg and mass of the ball is (1)/(4)kg and the heat produce in his body is one tenth of the total work done by him, then Select the incorrect statement :

In a second ODI match between England and India Bhuwnesh kumar bowled his medium fast bowling. He starts his run up from the distance of 50m from the stumps (bowling end) and at the time of bowling a ball,his speed is 36(km)//(hr) and the speed of ball is 144(km)//(hr) . If his mass is 70 kg and mass of the ball is (1)/(4)kg and the heat produce in his body is one tenth of the total work done by him, then Energy spent by bowler in throwing one ball is :-

In a second ODI match between England and India Bhuwnesh kumar bowled his medium fast bowling. He starts his run up from the distance of 50m from the stumps (bowling end) and at the time of bowling a ball,his speed is 36(km)//(hr) and the speed of ball is 144(km)//(hr) . If his mass is 70 kg and mass of the ball is (1)/(4)kg and the heat produce in his body is one tenth of the total work done by him, then If he accelerates uniformly to the sumps find the average friction force acting on him :-

The maximum bowling speeds, in km per hour, of 33 players at a cricket coaching centre are given as follows. Calculate the median bowling speed.

A spherical shaped fish bowl filled with water of refractive index 1.3 is placed in another large tank filled with another liquid of refractive index 1.4 such that rim of the fish bowl is slightly above the liquid filled in the tank. The diameter of the fish bowl is 20 cm. A parallel light rays from a distant object is incident on the spherical fish bowl. Find the position at which incident light rays will get focused when seen by a small fish at the centre of the bowl.

A stick is placed inside a hemispherical bowl as shown in Figure. The stick is horizontal and has a length of 2a. Eye of an observer is located at E such that it can just see the end A of the stick. A liquid is filled upto edge of the bowl and the end B of the stick becomes visible to the observer. Radius of the bowl is R. Find the refractive index (mu) of the liquid.

A bowling machine projects a ball of mass 0.15kg in upward direction. If ball displaced along bowling machine 0.2 m and released. after released from bowling machine ball attain 20 m height then find force exerted by bowling machine on ball