A heavy ball is suspended from the ceiling of a motor car through a light string. A transverse pulse travels at a speed of `60 cm s^-1` on the string when the car is at rest and `62 cm s^-1` when the car accelerates on a horizontal road. Find the acceleration of the car. Take `g = 10 ms^-2`
A. `2.7 m//s^(2)`
B. `3.7 m//s^(2)`
C. `2.4 m//s^(2)`
D. `4.1 m//s^(2)`
