A body projected vertically up with a veocity 10 m/s reaches a height of 20 m. if it is projected with a velocity of 20 m/s,then the maximum height reached by the body is?
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Answered by
2
Explanation:
Given , v=0,u=10m/s,h=20m ,
By using ,
v
2
=u
2
−2gh
0
2
=10
2
−2g×20
or g=100/40=5/2m/s
2
Now , if v
′
=0,u
′
=20m/s,h
′
=?,g=5/2m/s
2
,
Again by using ,
v
2
=u
2
−2gh
0
2
=20
2
−2×(5/2)×h
′
or h
′
=400/5=80m
Answered by
0
Answer:
80 m. Hope it helps you
Sorry for the picture
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