A ball is tossed straight upwards with an initial velocity of .30.00 metres per second from...

Question

Question

A ball is tossed straight upwards with an initial

science physics

Answer 1

Answer #1

3)

initial velocity=v=-30m/s( upwards)

initial height=20 cm

velocity =v+gt=-30+gt

distance =S=20+vt+0.5gt^2=20-30t+4.9t^2

(b)velocity after hitting ground=v=sqrt(900+2*9.8*20)=35.9 m.s

(c) velocity after bounce=8.98

height=v^2/2g=4.11 m

Answer 2

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