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Nataly [62]
3 years ago
6

A rock is shot from a catapult at the top of a mountain a height h above a level plain below. The rock is fired at an angle θ ab

ove the horizontal and with an initial vi.(a)Find a symbolic expression in terms of the variables vi, g, and θ for the time at which the rock reaches its maximum height.
Physics
1 answer:
Anika [276]3 years ago
6 0

Answer:

t=\frac{v_{i}Sin\theta }{g}

Explanation:

Let the time taken by the shot to reach to maximum height is t.

initial velocity, vi

angle of projection, θ

Acceleration, g

At maximum height, the vertical component of velocity is zero.

use first equation of motion in vertical motion

v=u+at

0=v_{i}Sin\theta -gt

t=\frac{v_{i}Sin\theta }{g}

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\theta=40^0

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