A stone is dropped from a cliff. Its speed after it
has fallen 100 m is (1)
a. 98 ms
b. 19.69 ms
c. 9.8 ms
d. 44.2 ms
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Answer:
answer is d. 44.2
Explanation:
initial speed=u=0
distance= s=100m
final speed =v
acceleration =a=g=9.8m
V2=U2+2as
V2=a+2×9.8×100
v=2×9.8×100
v=44.2ms-1
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