Question

25 A body is moving with velocity 30 m/s towards
east. After 10 seconds its velocity becomes
40 m/s towards north. The magnitude of average
acceleration of the body is -
[AIPMT (PRE) 2011
(A) 5 m/s2
(C) 7 m/s2
(B) 1 m/s2
(D) 8 m/s2​

Answer 1

Answer:

Initial velocity  u=30i^

Final velocity   v=40j^

Change in velocity  Δv=40j^−30i^

Magnitude    ∣Δv∣=302+402=50

Average acceleration   a=Δt∣Δv∣=1050=5 m/s2

option A) 5 m/s2 is correct answer

Explanation:

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