Runner A passes a bus stop with a constant speed of

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

5\,\text{m/s}

. Exactly

4\,\text{s}

later, Runner B starts from the same bus stop from rest and accelerates uniformly at

1.5\,\text{m/s}^{2}

. Will Runner B overtake Runner A within the next

10\,\text{s}

(measured from B’s start)? If yes, how far from the bus stop does this occur? (a) Yes, at about

75\,\text{m}

(b) Yes, at about

50\,\text{m}

67\,\text{m}

(d) No, Runner B does not overtake within

10\,\text{s}