An outfielder throws a 1.55 kg baseball at a speed of 77 m/s and an initial angle of 21.7鈼?
What is the kinetic energy of the ball at the highest point of its motion?
Answer in units of J.What is the kinetic energy of the ball at the highest point of its motion?EZ
vertical component of speed at max height
= 0
horizontal component of speed at max height
= 77 * cos 21.7
the kinetic energy of the ball at the highest point of its motion
= 0.5 * 1.55 * [ 77 * cos 21.7 ]^2
= 3966.76 J ---answer
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