An auto race takes place on a circular track. a car completes one lap in a time of 25.0 s, with an average tangential speed of 53.6 m/s. find
(a) the average angular speed and
(b) the radius of the track.

(a) Angular speed will be 0.2512 rad/sec

(b) Radius will be 213.375 m

Explanation:

We have given time to complete 1 lap = 25 sec

We know that 1 lap = radian

(a) So angular speed

(B) Tangential velocity is given as v = 53.6 m/sec

We know that tangential velocity is given by

So radius

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2