Could you please help with part b? i am unsure as to how to get the average force [N94/2/1]A projectile of mass 3.2 x 10-2 kg is fired from a cylindrical barrel of cross-sectional area2.8 x 10-4 m² by means of compressed air. The variation with time of the excess pressure p ofthe gas in the barrel above atmospheric pressure is shown in the figure below.(a)(b)p/MPa(c)6050(i)(ii)40302010-0Calculate1.02.0t/ms3.04.0the maximum force exerted on the projectile,the acceleration of the projectile which would result from the force calculated in(i).From the graph, estimate the total change in momentum experienced by theprojectile, due to the compressed gas.The speed of the projectile changes from zero to 270 m s-¹ as it leaves the barrel.What is the change in momentum of the projectile?(d) Compare your answers in (b) and (c) and suggest a possible reason for thedifference.

Answered: Image /qna-images/answer/c93172e2-c0b7-4126-b0bd-9fa0ddaa1888.jpg

(b) (c) From the graph, estimate the total change in momentum experienced by the projectile, due to the compressed gas. The speed of the projectile changes from zero to 270 m s-¹ as it leaves the barrel. What is the change in momentum of the projectile? (d) Compare your answers in (b) and (c) and suggest a possible reason for the difference.

(b) (c) From the graph, estimate the total change in momentum experienced by the projectile, due to the compressed gas. The speed of the projectile changes from zero to 270 m s-¹ as it leaves the barrel. What is the change in momentum of the projectile? (d) Compare your answers in (b) and (c) and suggest a possible reason for the difference.

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ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

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Question

Could you please help with part b? i am unsure as to how to get the average force

[N94/2/1]
A projectile of mass 3.2 x 10-2 kg is fired from a cylindrical barrel of cross-sectional area
2.8 x 10-4 m² by means of compressed air. The variation with time of the excess pressure p of
the gas in the barrel above atmospheric pressure is shown in the figure below.
(a)
(b)
p/MPa
(c)
60
50
(i)
(ii)
40
30
20
10-
0
Calculate
1.0
2.0
t/ms
3.0
4.0
the maximum force exerted on the projectile,
the acceleration of the projectile which would result from the force calculated in
(i).
From the graph, estimate the total change in momentum experienced by the
projectile, due to the compressed gas.
The speed of the projectile changes from zero to 270 m s-¹ as it leaves the barrel.
What is the change in momentum of the projectile?
(d) Compare your answers in (b) and (c) and suggest a possible reason for the
difference.

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