Question

Locate the centre of mass of a system of two spherical masses of 5kg and 10kg kept with their centres 1m apart

Answer 1

2/3 of the from the 5kg mass, since

2*5 = 1*10

Answer 2

The work done by boy pulling a snow sled up a hill is 425 j.what is the power expended by the boy if he pulls on the sled for 10.5s?

Answer 3

The work done by boy pulling a snow sled up a hill is 425 j.what is the power expended by the boy if he pulls on the sled for 10.5s?please