A 60.0-kg person holding two 0.700-kg bricks stands on a 2.70-kg skateboard. Initially, the skateboard and the person are at rest. The person now throws the two bricks at the same time so that their speed relative to the person is 20.0m/s.

What is the recoil speed of the person and the skateboard relative to the ground, assuming the skateboard moves without friction?

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.

momentum of soft ball three times less than baskey ball

the five characteristics of adolescence are biological growth and development, and undefined status, increased decision making, increased pressure and the search of self.

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.