Question

the mass of a body is 2.5 kg.It is in motion and is velocity after t is v=t^3/3+t^2+1​ calculate the force acting on the body at time =3s

Answer 1

Answer:

Work Power Energy

Explanation:

★ Given ;

» Mass of body ( m ) = 2.5 kg

» time ( t ) = 3 seconds

Velocity ( v ) = t³ / 3 + t² + 1

★ Force ( F ) = ???

★★ Note [ Acceleration = dv / dt = t³ + t² + 1 / dt = 3t² / 3 + 2t = t² + 2t ] ★★

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Force ( F ) = Mass ( m ) × Acceleration ( a )

= 2.5 × t² + 2t

( at t = 3 seconds )

= 2.5 × ( 3² + 6 )

= 2.5 × ( 15 )

Force ( F ) = 37.5 Newton

Hope it helps you