For a machine, the input force is 30 n, and the input distance is 2 m. factoring in the effect of friction, what must be true about the work output?
a. it must be greater than 60 j
b. it equals 60 j.
c. it must be less than 60 j

C. It must be less than 60 J

Explanation:

The work going into the machine is the product of the force and distance:

W = Fd

W = (30 N) (2 m)

W = 60 J

The work out of the machine is less than this due to the frictional losses.

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."

snell's law

refractve index = sin incidence / sin refraction