Answer :

Given,

Mass of the ball = 0.15 kg


Initial speed of the ball = final speed of the ball= 54 km/h = 15 m/s



From the figure,


The ball is deflected at an angle 45°. After deflection by the batsman,


XOA = AOY = 22.5° = θ


The horizontal components of the initial and final velocities are


The vertical components are of the initial and final velocities are


The vertical components do not survive as they are in opposite directions,


The horizontal component of the velocity contributes in the momentum of the system,


The impulse ‘I’ imparted to the ball= change in the momentum of the ball



= 2× 0.15 kg × 15 m/s × cos 22.5°


I = 4.16 kg m/s


The impulse imparted to the ball is 4.16 kg m/s


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