Question

spaceship 1 and spaceship 2 have equal masses of 200 kg. They collide Spaceship 1's final speed is 2 m/s, and spaceship 2's final speed is 1 m/s in the same direction. What is their combined momentum?
A. 200 kg-m/s
B. 600 kg-m/s
C. 800 kg-m/s
D. 400 kg-m/s

Answer 1

Answer:

400 is the right answer......

Answer 2

Answer:

B. 600 kg-m/s

Explanation:

We have been given that

Spaceship 1 and spaceship have equal masses of 200 k.g. Spaceship 1's final speed is 2 m/s and spaceship 2's final speed is 1 m/s.

We need to find the Combined momentum.

Momentum = (mass) x (velocity), in the same direction as the velocity.

Spaceship-1 . . . Momentum = (200) x (2) = 400 kg-m/sec, in some direction.

Spaceship-2 . . . Momentum = (200) x (1) = 200 kg-m/sec, in the same direction of spaceship 1

Their Combined momentum = 200 + 400

                                  =600 kg-m/sec, in their common direction.