To test the performance of its tires, a car travels along a perfectly flat (no banking) cir-
cular track of radius 284 m. The car increases
its speed at uniform rate of
at
4.8 m/s?
dt
until the tires start to skid.
If the tires start to skid when the car reaches
a speed of 39.6 m/s, what is the coefficient of
static friction between the tires and the road?

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."

a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.