A ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of 10 m s-2, with what velocity will it strike the ground? After what time will it strike the ground?
NCERT Class IX
Sciences - Main Course Book
Chapter 8. Motion
Answers
Answered by
9
v²=2gh
v=(2gh)½
v=( 2×10×20)½=20m/s
h=at²/2
t=(2h/g)½=(2*20*10)½=20 sec
v=(2gh)½
v=( 2×10×20)½=20m/s
h=at²/2
t=(2h/g)½=(2*20*10)½=20 sec
Answered by
13
Hlo friend
Here ur answer:
v²=2gh
=v=(2gh)½
=v=( 2×10×20)½=20m/s
=h=at²/2
t=(2h/g)½
=(2*20*10)½
=20 sec
Here ur answer:
v²=2gh
=v=(2gh)½
=v=( 2×10×20)½=20m/s
=h=at²/2
t=(2h/g)½
=(2*20*10)½
=20 sec
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