Question

5. Find the magnitude of change in momentum of an oblique projectile during its whole journey if velocity and
angle of projection are v, and respectively.
​

Answer 1

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Physics

Work, Energy and Power

Conservation of Energy

Change in momentum of a pro...

PHYSICS

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Asked on December 26, 2019 by

Janak Navya

Change in momentum of a projectile in half the time of flight if momentum of projection is mu at angle θ?

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ANSWER

The object is projected at an angle θ

So, initial velocity be, u

i

= ucosθ

i

^

+usinθ

j

^

The vertical component that lifting the body upward is usinθ

j

^

In projectile motion, horizontal component of velocity remains unchanged.

Therefore in total time of flight, ie; at the end of the motion,

velocity is, u

f

=cosθ

i−

^

sinθ

j

^

Thus change in velocity in the motion, Δv=u

f

−u

i

Δu=−2usinθ

So, change in momentum, ΔP=−2musinθ

This is the change in momentum in total time of flight.

In half of time of flight, change in momentum is= -musinθ

So the magnitude of change in momentum is in half of time of flight is musinθ

Answer 2

Answer:

Please refer to the enclosure........