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Q.

Given below are two statements
Statement I: A car moving towards East takes a turn and moves towards North the speed  remains unchanged. The acceleration of the car is not zero.
Statement II: A car and a truck moving with the same kinetic energy are brought to rest by applying breaks which provide equal retarding forces. Both come to rest in equal distance.

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a

Statement I is correct but Statement II is incorrect.

b

Statement I is incorrect but Statement II is correct 

c

Both Statement I and Statement II are correct.

d

Both Statement I and Statement II are incorrect.

answer is C.

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Detailed Solution

For Statement I: 
 Question Image
From the diagram
ΔV =Vf−Vi
 |ΔV|=2V
Thus the velocity is changing , therefore acceleration is not equal to zero. Hence,  Statement I is correct.
For Statement II
Work done =∆ K E
Work done = - F S = O – K . E
 ⇒ K . E = F S ⇒S=K.EF 

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Given below are two statementsStatement I: A car moving towards East takes a turn and moves towards North the speed  remains unchanged. The acceleration of the car is not zero.Statement II: A car and a truck moving with the same kinetic energy are brought to rest by applying breaks which provide equal retarding forces. Both come to rest in equal distance.