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With detailed explaniation
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With detailed explaniation

With detailed explaniation-example-1
User Fetsh
by
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1 Answer

3 votes
  • Ø=37°
  • Initial velocity=u=20m/s
  • g=10m/s²

#A


\\ \rm\Rrightarrow H_(max)=(u^2sin^2\theta)/(2g)


\\ \rm\Rrightarrow H_(max)=(20^2(sin37)^2)/(2(10))


\\ \rm\Rrightarrow H_(max)=(400sin^237)/(20)


\\ \rm\Rrightarrow H_(max)=20sin^237


\\ \rm\Rrightarrow H_(max)=7.2m

#B


\\ \rm\Rrightarrow R=(u^2sin2\theta)/(g)


\\ \rm\Rrightarrow R=(20^2sin74)/(10)


\\ \rm\Rrightarrow R=40sin74


\\ \rm\Rrightarrow R=38.5m

#C


\\ \rm\Rrightarrow T=(2usin\theta)/(g)


\\ \rm\Rrightarrow T=(2(20)sin37)/(10)


\\ \rm\Rrightarrow T=4sin37


\\ \rm\Rrightarrow T=2.4s

Now


\\ \rm\Rrightarrow v=u-gt


\\ \rm\Rrightarrow v=20-10(2.4)


\\ \rm\Rrightarrow v=20-24


\\ \rm\Rrightarrow v=-4m/s

User CyprUS
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