1)A stone is dropped from a rising
balloon at a height of 300 m above
the ground and is reaches the
ground in 10 s. The velocity of the
balloon when it was dropped is :
1) 19 ms
2) 19.6 ms-
3) 29 ms 4) 0 ms-1
2)Two bodies, initially separated by
x m and having an initial velocity
2 ms' each, are moving towards
each other along a straight line.
If the rate of increase of their
speeds is 3 m s- and 2 m s-2
respectively and the two meet
after 4 seconds, find x.
1) 52 m
2) 54 m
3) 56 m
4) 58 m
Answers
Answered by
1
Answer:
the rate of increase of their speeds is 33 m s -and 2 m s -2 respectively and the two meet after
Answered by
0
Answer:19
Explanation: according to the formula s=ut +1/2 gt^2
300=u*10+0.5*9.8*100
300=u*10+490
300-490=u*10
-190/10=u
u=19 because it is coming to ground towards the gravitational force
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