In deep space (ignore gravitation effects), an apple and an orange are thrown at

Question

In deep space (ignore gravitation effects), an apple and an orange are thrown at each other across a space shuttle. The apple has a mass of 136 g and is thrown with an initial speed of 1.10 m/s. The orange has a mass of 205 g, as it is thrown with an initial speed of 1.65 m/s. The fruits collide, sending the orange downwards at a speed of 0.75 m/s

Given:

V1,f = sqrt (-1.387 m/s)^2 + (1.131 m/s)^2 = 1.79 m/s

Since Vx < 0, we must add 180 to our angle

? = 141 degrees

QUESTIONS:

a)      How do we know that Vx < 0???

b)      Identify what type of collision elastic or inelastic collision. Show any calculations necessary to support your answer, and give thorough explanation if no calculation is required.

c)       Give an example not identified in the answer for (b), that reflects an elastic or inelastic collision.

Explanation / Answer

(a) We can conserve momentum in all direction .Since initial momentum is in downward direction.final momentum will also be downward direction making Vx in downward direction so Vx<0

(b)

initial momentum=final momentum

Calculation is already done

initial kinetic Energy=0.5*(0.136*1.1^1+0.205*1.65^2)=0.3613 J

final kinetic energy=0.5*(0.136*1.79^1+0.205*0.85^2)=0.29 J

since Kinetic Energy is not equal so it is inelastic collision

(c)In perfect inelastic collision ,both should move together so it was not perfect inelastic collision

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