[单选题]
A car is negotiating a f *1)tc; rs,e6ljftg belatym/w3*q;hh nz circular curve of radius 50 m with a speed of 20 m/s. The maxi 3mq y*nhzwh/;mum centripetal force (provided by static friction) is $1.2 \times 10^{4} \; N$. What is the centripetal acceleration of the car?
A. $0.40 \; m/s^2$
B. $0.80 \; m/s^2$
C. $4.0 \; m/s^2$
D. $8.0 \; m/s^2$
Post time 2024-1-22 02:51:16