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101. Aparticle is moving with a velocity of 10m/s towardseast. After 10 s its velocity changes to 10m/stowards north. Its average accelaration is:-(1) zero2 m/s2 towards N-W(3) a m/s towards N-W(4)m/s2 towards N-W

Answer»

The average acceleration is (change in Velocity)/time

=>vf = 10j , vi = 10i , t = 10

so avg. a = (10j-10i)/10 = 1j-1i = √2( j-i) North-west

option 2



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