It crashes back down, because of defective machinery, to the starting point after 10 seconds. How high above its starting point is the highest point?
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Always we need precise english.
Is it ten seconds after it reaches its highest point?
Or ten seconds after leaving the ground?
For scenario 1.
s = 1/2 a t^2
= 4.9 * 100 = 490 m
For scenario 2
s = 1/2 a t^2
= 4.9 * 5^2
= 4.9 * 25 = 123 m
Is it ten seconds after it reaches its highest point?
Or ten seconds after leaving the ground?
For scenario 1.
s = 1/2 a t^2
= 4.9 * 100 = 490 m
For scenario 2
s = 1/2 a t^2
= 4.9 * 5^2
= 4.9 * 25 = 123 m