State the relation between force and acceleration. How much force acts on a body whose momentum is constant (i.e. = constant) ? [3 MARKS]

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Solution

Statement of Relation:1 Mark
Explanation: 2 Mark

We know that
$F = m \times a$

$F = \frac{R a t e o f c h a n g e o f m o m e n t u m}{R a t e o f c h a n g e o f t i m e}$ . If $p =$ constant, then $F = 0$ . No force acts on the body. (It is so because since momentum remains constant i.e. same, the rate of change of momentum is zero)

i.e. $F = \frac{0}{R a t e o f c h a n g e o f t i m e}$
i.e. $F = 0$

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State the relation between force and acceleration. How much force acts on a body whose momentum is constant.

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