Question

Valentina, an astronaut, has a mass of 46 kg. She is floating motionless, 21 meters away from her spaceship. She throws her 2.5 kg camera in the opposite direction of the spaceship with a velocity of 12 m/s.

A. How fast will Valentina be moving back towards the spaceship?

B. How long will it take her to eventually reach the spaceship?

Answer 1

Step-by-step explanation:

Using conservation of momentum

m1v1 = m2v2

2.5 kg * 12 m/s = 46 kg * v2

v2 = .652 m/s

21 m / .652 m/s 32.2 seconds