A girl of mass 50 kg jumps out of a rowing boat of mass 300 kg on the bank, with a horizontal velocity of 3 m/s. With what velocity does the boat begin to move backwards?

Question

Philoid · Accepted Answer

Mass of girl, m1= 50kg

Mass of the boat, m2= 300kg

Velocity of the girl, v1= 3m/s

v2=? we have to find it

We know,

conservation of momentum,

= m1v1 + m2v2

=0

0 is coz no initial velocity is applied and the answer will be,

50 × 3+ 300 × v2 =0

v2 = - 150/300

= - 0.5m/s

Since, it is moving in backward direction the velocity (v2) will be 0.5m/s in de backward direction.