Can someone please explain why the answer is D? I calculated and got 20.
hi
i made the same mistake, we are given the speed not the velocity
speed is a scalar unit so it has no direction and we can choose u=12
v²=u²+2as with a=10
20²=12²+20s
s = 256/20 = 12,8 which is about 13m
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Oh, so basically when speed is given instead of velocity, we can assume it’s the same horizontally and vertically?
yes if it’s a speed it will be the same value in any direction
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I didn’t know it worked like that. Thank you!