A stone is dropped from a tower. What is the speed after it has fallen 62.5 m?
Answers
Answered by
0
Explanation:
where is the time????????
Answered by
1
Explanation:
u = Initial velocity = 0
v = Final velocity
s = Distance travelled = 20m
a = acceleration = g = 10ms
−2
Now , we know that from the equation of motion that ,
v
2
=u
2
+2as
v=
u
2
+2as
v=
0+2×10×20
v=
400
ms
−1
v=20ms
−1
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