a ball of mass 5 Kg strikes against a wall at a angle of 45 degree and is reflected at a same angle. find change in momentum
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Answer:
Change in momentum = 10ucos45
Step by step explanation :
Given in the question,
mass of ball = 5kg
angle at which it deflected back = 45°
Formula to use
change of mometum = mΔucosФ
where m = mass
u = velocity
Ф = angle
Δ = change
The change in momentum equals the mass times the change in velocity.
change in momentum = impulse
= 5ucos45 - (- 5ucos45)
= 2 (5ucos45)
= 10ucos45
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