Respuesta :
Using the concepts of momentum we got that
b) the amount of time in contact with the floor and
c) the impulse exerted by the floor
are the quantities which must necessarily be larger for ball a than for ball b.
Since, it is given that two balls are of same mass and diameter, therefore the vector quantities like momentum and force remains same for both of the balls as the balls have same mass.
Now, talking about the time of contact, it depend on the type of collision and material by they are made, as if it is given that one of the ball is rebouncing more means that one of the ball has density low as compared to other.
Since impulse is defined as product of force and time, therefore impulse is one the deciding factor.
Hence, if two balls, a and b, have the same mass and diameter but are made from different types of rubber. the balls are dropped from the same height above the floor. after colliding with the floor, ball a bounces higher than ball b bounces, the following quantities must necessarily be larger for ball a than for ball b are:
- the amount of time in contact with the floor
- the impulse exerted by the floor
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