imagine a demo car of total mass 51.0 kg includes nitro boost fuel of 1.0kg. The car is initially accelerating at the rate of 2.0 m/s^2. When the nitro boost is powered on, the new acceleration is 4.0 m/s^2. find out the change in force just prior to firing the nitro and just after the fuel is exhausted​

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

it is a negative acceleration