Answer:
h~=371.26m
Explanation:
when an object falls we use the equations of accelerated motion. There is only one that gives distance.
Since we have no initial velocity (started from rest) we can get rid of the (ut) term
where a we substitute g (gravitational acceleration, constant for given heights and almost 9.81m/s^2).
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Hope this helps :)
Speed at the beginning = zero
Speed after 12 seconds = 45 m/s
Average speed during the 12 seconds = (1/2) · (0 + 45) = 22.5 m/s
Distance covered in 12 seconds at an average speed of 22.5 m/s :
Distance = (speed) x (time)
Distance = (22.5 m/s) x (12 sec)
<em>Distance = 270 meters </em>
Answer:
Explanation:
It doesn't mean it equal to each other. lets say x is directly proportional to y. Here, if something happens to x then, y will do the same thing. for example, if x increases, then y also increases. similarly, if x decreases, then y also decreases. therefore, x is something or lets say it is a major factor that decides the fate of y.