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Q.

Velocity of a particle travelling along the x-axis changes with x-coordinate as shown in the graph. The acceleration of the particle when its velocity is 5 m/s is (in m/s2)

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a

1 m/s

b

4 m/s2

c

1.5 m/s

d

2 m/s2     

answer is C.

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Detailed Solution

 a=dvdta=vdvdx
 a = (velocity) × (slope of v vs x 
 a=vdvdx5(5210)(slope=ΔvΔx=5210)   a = 1.5m/s2
 

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