Question

2) What maximum height a stone will
reach if it is thrown upwords with a
velocity of 20m/sec?(g = 10m/sec​

Answer 1

Answer:

A stone is thrown vertically upward with a velocity of 20 meter/second. What is the maximum height reached by the stone?

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I'm sure this is homework, but oh well I guess.

height=Vinitialt−12gt2

So you need to determine the time it takes first.

V=Vinitial−gt

At its peak height velocity equals zero, so

0=20−9.8t →→

−20=−9.8t →→

−20−9.8=t

So

t=2.04 sec.

Now that we have the time:

h=20×2.04−129.8×2.042

h=40.8−20.39184

So,

h=20.41 m.