A ball is projected upward at time t=0.0s from a point on a roof 90m above the g

Question

A ball is projected upward at time t=0.0s from a point on a roof 90m above the ground. The initial velocity of the ball is 29.7s. Consider All quantities as positive in the upward direction the velocity of the ball when it is 34m above the ground is closest to A ball is projected upward at time t=0.0s from a point on a roof 90m above the ground. The initial velocity of the ball is 29.7s. Consider All quantities as positive in the upward direction the velocity of the ball when it is 34m above the ground is closest to All quantities as positive in the upward direction the velocity of the ball when it is 34m above the ground is closest to

Explanation / Answer

From

V2=U2+2a(X-Xo)

V2=29.72+2*(-9.8)*(34-90)

V2=1979.8

V=44.5 m/s

as it is in downward direction we will take it negative

V=-44.5 m/s

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