A car of mass tons was initially at rest on a hill inclined at an angle to the horizontal, where . After 100 seconds, its velocity was 21 m/s. Calculate the resistance per ton of the car’s mass. Take .
A body was placed on the top of a rough inclined plane of length 259 cm and height 84 cm. The body started sliding down the plane. Given that the coefficient of friction was 0.29, find the acceleration of the body. Take .
A train of mass 270 metric tons is accelerating along a horizontal track at 4.4 cm/s2. Its engine produces a driving force of 2 080 kg-wt. If the train starts to ascend a 1 in 490 incline, find the acceleration of the train given that the resistance does NOT change, and the acceleration due to gravity is .