Scooter C starts from rest

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

Problem

Scooter C starts from rest, accelerates uniformly to

20\,\text{m/s}

4\,\text{s}

, and then maintains this speed for the next

2\,\text{s}

. Scooter D travels at a steady

15\,\text{m/s}

for the entire

6\,\text{s}

. Taking the starting point as the origin, which scooter has the higher average speed over the

6\,\text{s}

interval? (a) Scooter C only (b) Both have the same average speed (c) Scooter D only (d) The information is insufficient