the combine mass of a race car and its driver is 600kg. traveling at constant speed, the car car completes one lap around a circular track of radius 160m in 36s
a) find the speed of the car
b) find the centripetal acceleration of the car
explain in details
2006-11-24 07:27:45 · 1 個解答 · 發問者 ? 1 in 科學 ➔ 其他：科學
(a) Distance travelled in a complete lap = 2xpix160 m = 1005 m
where pi=3.14159...
Speed = distance/time = 1005/36 m/s = 27.9 m/s
(b) Centripetal acceleration = v^2/r
where v is the speed and r is the radius of circle
thus centripetal acceleration = 27.9^2/160 m/s2 = 4.87 m/s2
2006-11-24 12:05:30 · answer #1 · answered by 天同 7 · 0⤊ 0⤋