Question

Momentum of an object changes from 100kg m/s in 2 seconds.what is the force appled on it?

Answer 1

Explanation:

Momentum =M×V then,

100×2=200kgm/sec

Answer 2

$\huge{ \underline{ \red{ \mathfrak{Correct \: Question}}}}$

=> Momentum of an object changes from 100 kgm/s to 200 kgm/s in 2 seconds. What is the force applied on it?

$\huge{ \underline{ \red{ \mathfrak{Solution}}}}$

$\bold{ \star}Force = (\frac{change \: of \: momentum}{time}) \: N \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: = (\frac{200 - 100}{2}) \: N \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: = (\frac{100}{2}) \: N \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 50 \: N$

Note:-

Force = ma

= m(v-u)/t

= (mv – mu)/t

= change of momentum /time

= rate of change of momentum

#answerwithquality

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