a player hits a tennis ball into the air with an initial velocity of 36m/s at 36

Question

a player hits a tennis ball into the air with an initial velocity of 36m/s at 36 degrees from the vertical. how fast is the ball moving at the highest point in its trajectory of air resistance is negligible? a player hits a tennis ball into the air with an initial velocity of 36m/s at 36 degrees from the vertical. how fast is the ball moving at the highest point in its trajectory of air resistance is negligible? a player hits a tennis ball into the air with an initial velocity of 36m/s at 36 degrees from the vertical. how fast is the ball moving at the highest point in its trajectory of air resistance is negligible?

Explanation / Answer

at the highest point the ball has got only horizantal component of velocity

the vertical component becomes zero

the ball is making an angle 36 with the vertical

the angle made with the horizantal = 90 -36 = 54

the horizantal component = vo*cos44 = 36*cos54 = 21.2 m <<,---answer

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