A particle of mass 1.5kg is projected along a straight line with an initial speed of 4ms−1. A constant acceleration of 2ms−2 acts on it in the direction of motion. Answer the following.
a. (i) Write the expression for its speed v(t) at any time t seconds after projection.
b. (ii) Obtain the expression for the instantaneous power supplied by the net force at time t, and hence calculate the power at t=3s.
c. (iii) Determine the time at which the instantaneous power first reaches 100W.