acceleration and body mass

ive read many times about how body mass is good for acceleration but in te end will hurt your top speed why is this? how does extra mass aid in increasing your acceleration speed?

Mass doesn’t aid in acceleration, muscle does. If you have more muscle mass and if that muscle mass contributes to a higher level of explosive strength then you can accelerate faster. Higher levels of concentric strength are highly applicable to overcoming inertia in the early stages of acceleration.

However, once you get up towards to speed, you don’t need to overcome inertia, instead you want to simply maintain the speed you have gained. This is where the extra weight works against you since the greater concentric strength does not necessarily equal greater reactive strength and can contribute to increased ground contact times.

so basically max strength is very improtant for good acceleration.