Question

Calculate the speed of the car between the following points:
(i) Origin to A
(ii) A and B
The distance-time graph of these points is given below.

• A. 5.55 m/s, 11.11 m/s
• B. None of the above
• C. 5 m/s, 10 m/s
• D. 15 m/s, 30 m/s

Answer 1

The correct option is A 5.55 m/s, 11.11 m/s

Speed = Distance/Time
From A to origin, distance travelled is $(5\times 1000)=5000m$
From A to origin, time taken is $(15\times 60)=900$ sec
Speed = $5000/900=5.55m/s$
From A to B, distance travelled is $(15-5)=10km=(10\times 1000)=10000m$
From A to origin, time taken is $(15\times 60)=900sec$
Speed = $10000/900=11.11m/s$