an object with a mass of 5kg is moving with an initial velocity of 20m/s.the object accelerates at a rate of 15m/s/s for 8s.what is the net force on the ball during acceleration?

It doesn't matter what the object's initial velocity is, or how long the acceleration lasts.  All that matters is the object's mass and acceleration.Force = (mass) x (acceleration) =                 (5kg) x (15 m/s²) =                          75 kg-m/s² = 75 newtons .

Answer:It doesn't matter what the object's initial velocity is, or how longthe acceleration lasts.  All that matters is the object's mass andacceleration.Force = (mass) x (acceleration) =                (5kg) x (15 m/s²) =                         75 kg-m/s² = 75 newtons .