Question

In the speed-time graph for a moving car given here, the part which indicates uniform acceleration

• A. AB
• B. BC
• C. DE
• D. None

Answer 1

The correct option is B BC

The slope of a Speed-time graph shows the acceleration of the car. A steep slope indicates rapid acceleration. By calculating the gradient of the slope the acceleration can be obtained

Acceleration=$=\frac{rise}{run}=\frac{initialvelocity-finalvelocity}{time}$So region BC gives the acceleration.

And a downward slope of a speed-time graph shows the deceleration of the car.

So region CD gives the deceleration.