The coefficient of static friction between waxed skis and now snow is 0.14. what force will be needed to get a 700 n skier at rest moving?
a: 28 n
b: 70 n
c: 98 n
d: 980 n

C. 98 N

Explanation:

The force needed to get the skier at rest moving must be at least equal to the maximum static frictional force acting on the skier, which is given by

where

is the coefficient of static friction

W = 700 N is the weight of the skier

Substituting into the equation, we find

the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.