An ice fisherman is stuck out on a lake with a 12 kg fish he just caught. if the 92 kg fisherman throws the fish at 7 m/s south, how fast does the fisherman move?

a. 0.91 m/s
b. - 4.5 m/s
c. - 0.91 m/s
d. 4.5 m/s

Answer choice C

Explanation:

The momentum of the fish can be calculated with the formula p=mv, where m stands for mass and v stands for velocity. In this case, that is 12*-7=84. Setting this equal to the fisherman's total momentum, you find that -84=92v and that v=-0.91m/s. Hope this helps!

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

read more on -

a coal burning power plant