Question

A boy of mass 60 kg stands on a boat of mass 250 kg. This system is stationary. From the boat, the boy throws a rock of mass 1 kg into the water with a velocity of 10 m/s. What is the magnitude and direction of the boat's motion as a result of this?

A)
The boat moves in the direction of the rock with a velocity of 31 m/s.


B)
The boat moves in the direction of the rock with a velocity of 0.02 m/s.


C)
The boat moves in a direction opposite to the rock with a velocity of 0.03 m/s


D)
The boat moves in a direction opposite to the rock with a velocity of 10.1 m/s.
clearly not A or B
since the rock is so much smaller than the boat system, the boat will move much more slowly, right?

Related Questions

A boy sitting in a boat at rest throws a 6.4kg object horizontally out of the boat at 10.0 m/s. The... a boat of mass 90 kg is floating in still water a body of mass 30 kg walks from the stern to the boa... A 70 kg man stands at the back of a 3.0 meter long boat that has mass 2X kg. The front of the boat i... A man with mass m1 = 59 kg stands at the left end of a uniform boat with mass m2 = 163 kg and a leng...