A Time-Varying Horizontal Force F(t)= At⁴ + Bt² Acts for 0.500

question 5

Essay

A time-varying horizontal force F(t)= At⁴ + Bt² acts for 0.500 s on a 12.25-kg object,starting at time t = 1.00 s.In the SI system,A has the numerical value 4.50 and B has the numerical value 8.75.
(a)What are the SI units of A and B?
(b)What impulse does this force impart to the object?

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