A force F is applied to the initially stationary cart. The variation of force with time is shown in the figure. The speed of cart at t = 5 sec is -
Text Solution
Verified by ExpertsThe correct answer is:
B
Parabola has equation
F= kt 2 …… (1)
⇒ 50 = k (5) 2 ⇒ k = 2
∴ F = 2t 2 ……… (2)
⇒ 
= 2t 2
⇒ 
= 
⇒ 10 v = 2 
⇒ v = 8.33 m/s
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