A ball is kicked with an initial velocity of 19.0 m/s in the horizontal direction and 17.0 m/s in the vertical direction. (Assume the ball is kicked from the ground.) (a) At what speed in m/s) does the ball hit the ground? m/s (b) For how long in s) does the ball remain in the air? (c) What maximum height (in m) is attained by the ball?

Belen Moses

Belen Moses

Open question

2022-08-20

A ball is kicked with an initial velocity of 19.0 m/s in the horizontal direction and 17.0 m/s in the vertical direction. (Assume the ball is kicked from the ground.)
(a) At what speed in m/s) does the ball hit the ground? m/s
(b) For how long in s) does the ball remain in the air?
(c) What maximum height (in m) is attained by the ball?

Answer & Explanation

Wilson Riggs

Wilson Riggs

Beginner2022-08-21Added 8 answers

a) Speed of ball
v = v x 2 + v y 2 v = ( 19 ) 2 + ( 17 ) 2 b = 25.49  m\sec
b) Let time of right = τ
by equation
( v y ) f = ( v y ) τ g τ 0 = 17 10 τ τ = 17 10 τ = 1.7 sec
c) let max height=h
by equation
( v y ) f 2 = ( v y ) τ 2 2 g h 0 = ( 17 ) 2 2 × 10 × h h = 289 20 h = 14.45 m

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