Question

Alden works as an astronaut who has been sent to the International Space Station (ISS). At one instance while he is at rest, Alden throws a 5.0-kg bowling ball away from him at a rate of 2.0 m/s relative to ISS. At what speed and direction will he start to move after he releases the ball? *

Answer 1

According to the law of conservation of momentum

$Mv+mu=0\to u=-\frac{Mv}{m}$

If the mass of Aldene $76(kg)$, we get

$u=-\frac{Mv}{m}=-\frac{5\cdot 2}{76}=-0.13(m/s)$ opposite to the direction of movement of the ball. Answer