Question

7. Use the below v-t graph calculate, (a) the acceleration of the body as it moves from 0 to A (b) the distance covered by the body from A to B (c) the acceleration of the body from B to C ​

Answer 1

Explanation:

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Answer 2

Explanation:

(a) The acceleration of the body as it moves from O to A.

Answer:

→ Acceleration = Change in the velocity/Time taken

→ a = (v-u)/t

→ a = (4-0)/4

→ a = 4/4

→ a = 1 mps sq.

→ Acceleration = 1 mps sq.

(b) The distance covered by the body from A to B.

Answer:

→ s = Area under curve

→ Distance = Area under curve

→ Distance = Area of rectangle

→ Distance = L × B

→ Distance = (10-4) × (4-0)

→ Distance = 6 × 4

→ Distance = 24 m

(c) The acceleration of the body from B to C.

Answer:

→ Acceleration = Change in the velocity/Time taken

→ a = (v-u)/t

→ a = (0-4)/(16-10)

→ a = -4/6

→ a = -2/3 mps sq.

→ Acceleration = -2/3 mps sq.

→ Retardation = -2/3 mps sq. $\:$