To test the performance of its tires, a car
travels along a perfectly flat (no banking) cir-
cular track of radius 564 m. the car increases
its speed at uniform rate of
u du = 3.62 m/s?
dt
until the tires start to skid.
if the tires start to skid when the car reaches
a speed of 35 m/s, what is the coefficient of
static friction between the tires and the road?

What is the most useful equation for electric power?

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

During which interval are the persons represented by the graph not moving? a) 0 to 0.5 hrs b) 1.5 to 2 hrs c) 2 to 2.5 hrs d) 4.5 to 5 hrs