A block of mass 2 kg is free to move along the x-axis. It is at rest and from t = 0 onwards it is subjected to a time-dependent force F (t) in the x direction. The force F (t) varies with t as shown in the figure. The kinetic energy of the block after 4.5 seconds is:
Text Solution
Verified by ExpertsThe correct answer is:
C
× 4 × 3 – 
× 1.5 × 2 = p f – 0
p f = 6 – 1.5 = 
K.E. = 
= 
; K.E. = 5.06 J
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