Question

A car is moving with acceleration 20 m/s2. find the coefficient of friction so that a block of mass
m remains in rest with respect to cart.

(1) 0.4
(2) 0.3
(3) 0.5
(4) 1​

Answer 1

Answer:0.4 because of the car moving at 20s the speed of it shorts and the speeds shortens as well