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(solution) A squash ball typically rebounds from a surface with 25% of the


A squash ball typically rebounds from a surface with 25% of the speed with which it initially struck the surface. Suppose a squash ball is served in a shallow trajectory, from a height above the floor of 51 cm, at a launch angle of 6.0° above the horizontal, and at a distance of 10 m from the front wall.

(a) If it strikes the front wall exactly at the top of its parabolic trajectory, determine how high above the surface the ball strikes the wall?
 ______________m 

(b) How far horizontally from the wall does it strike the floor, after rebounding? (Ignore any effects due to air resistance.)
_______________ m


Q2: A projectile is fired into the air from the top of a cliff of height h = 186 m above a valley. Its initial velocity is v0 = 65.4 m/s at an angle ? = 64° above the horizontal. Where does the projectile land? (Ignore any effects due to air resistance.) (attach file is the picture)
 _________________________m

 


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Sep 13, 2020

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