Aboy pulls a wagon full of newspapers down the sidewalk at a constant acceleration. suddenly, half the newspapers fall off the wagon. if the boy continues to pull with the same force as before, what happens? a. the net force remains constant. b. the wagon suddenly speeds up. c. the mass that he is pulling does not change.

Ahowler monkey is the loudest land animal and, under some circumstances, can be heard up to a distance of 4.6 km. assume the acoustic output of a howler to be uniform in all directions and that the threshold of hearing is 1.0 × 10-12 w/m2. what is the acoustic power emitted by the howler

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.