A block of mass 2 kg is free to move along the x-axis. It is at rest and from t = 0 on wards 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 s is

Q: A block of mass 2 kg is free to move along the x-axis. It is at rest and from t = 0 on wards 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 s is

Numerical

(a) 4.50 J

(b) 7.50 J

(c) 5.06 J

(d) 14.06 J

Ans: (c)