Question

speed of the car S=(4t²+6t+7)m/s.Find the initial velocity of the car.​

Answer 1

a=dvdt=3t2+2t

∫v5dv=∫40(3t2+2t)dt

|v|v5=3t33+2t22=∣∣t3+t2∣∣40

v−5={(4)3+(4)2}−{0}

v=85m/s