A stone is thrown vertically upwards. The following are the velocities at different times. Plot a velocity–time graph and hence determine (a) the acceleration at the time t = 1 s, (b) the acceleration...

A stone is thrown vertically upwards. The following are the velocities at different times. Plot a velocity–time graph and hence determine (a) the acceleration at the time t = 1 s, (b) the acceleration at t = 2.5 s, (c) the distance travelled to the maximum height where the velocity is zero.