The energy in a batted baseball comes from the power delivered while the bat is

Question

The energy in a batted baseball comes from the power delivered while the bat is in contact with the ball. The most powerful hitters can supply some 10 horsepower during the brief contact time, propelling the ball to over 100 miles per hour. The figure shows data taken from a particular hit, giving the power the bat delivers to the ball as a function of time. Part A As a result of being ML the ball's kinetic energy increases by about 550 J. 1.3 kJ. 7.0 kJ. You cant tell because you don't know its speed coming from the pitcher.

Explanation / Answer

The increase in Kinetic energy can be found by finding the area under the given curve.

The maximum area which it covers will be the area of a right angled triangle.

K.E = 1/2 x base x height = (1/2) x 0.18 x 7000 = 630 J

therefore the kinetic energy will be lesser than 630 J. Hence the answer should be 550 J.

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