A particle moves along a straight line with position given by
PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A particle moves along a straight line with position given by x(t)=t2−2t, where x is in kilometres and t in hours. First, determine the velocity of the particle as a function of time. Next, find the time at which the particle reverses its direction of motion. Finally, find the instantaneous velocity of the particle at the moment when the total distance travelled (not displacement) becomes 17 km.