Now, suppose that zak's younger cousin, greta, sees him sliding and takes off her shoes so that she can slide as well (assume her socks have the same coefficient of kinetic friction as zak's). instead of getting a running start, she asks zak to give her a push. so, zak pushes her with a force of 125 n over a distance of 1.00 m. if her mass is 20.0 kg, what distance d2 does she slide after zak's push ends? remember that the frictional force acts on greta during zak's push and while she is sliding after the push.

A23 kg log of wood begins from rest, 300 m up a sluice (a water track used to transport logs, think of it as an inclined plane with negligible friction) inclined at 20° to the horizontal. after it reaches the flat waterway at the bottom it collides elastically with a 100 kg block of wood initially at rest near the base of the incline. (a) how long does it take the 23 kg log to travel down the incline? (b) what is the speed of the 23 kg log at the bottom of the incline? (c) what are the velocities of both blocks of wood after the collision? (d) what is the total kinetic energy before the collision? (e) what is the kinetic energy of the 23 kg log after the collision? (f) what is the kinetic energy of the 100 kg block of wood after the collision? (g) what is the total kinetic energy after the collision? (h) compare the total initial and total final kinetic energies. is this consistent with what you would expect for elastic collisions? explain!

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

The pressure proportional to the area a- inversely b- directly c- increase d-decrease