Question

23. If a stone is projected obliquely, then it follows
parabolic path under gravity. If height-time graph is
given as shown in figure, then the value of h in figure
is (g = 10 m/s2)


and 20 m how?

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Answer 1

Answer:

The answer is 20m

Explanation:

If you carefully look at the graph, you'll notice that the distance travelled in the 5th and 6th second is the same as the distance travelled between 1st and 2nd second. The maximum height will be reached at 3.5s. So while the stone is falling, we'll apply the formula for distance travelled in nth second

S = u + 1/2 g (2t-1).

t will be 6-3.5s or 2.5s. You'll get 20m