Question

figure shows the v-t graph for the motion of a lift the total distance travelled by the lift is

Answer 1

Answer:

Correct option is

A

68 m

We know that the area under the velocity time graph gives us the displacement.

To calculate the distance we simply add the area which is below the x-axis instead of subtracting it.

From the figure we get the areas as

(

2

1

×2×10)+(3×10)+(

2

1

×

3

1

×10)+(

2

1

×

3

2

×20)+(

2

1

×2×20)≈68