explain why it would take you longer to perform 10 repetitions lifting a 10-kg weight than it would to perform the same number of repetitions with a 5-kg weight.

Heavyweights take longer as the delay and speed decrease as the load increases.During muscle contraction, each muscle fibre passes through three phases namely, latent, contraction and relaxation phase. The latent period is the time required for the generation of the action potential, latent period is immediately followed by the contraction phase (shortening of muscle fibres). The contraction period is followed by the relaxation phase during which the fibres lengthen again and relax to reach the normal state.It would take you longer time to perform 10 repetitions lifting a 10-kg weight than it would perform the same number of repetitions with a 5-kg weight because the latent period increases with the heavier weight, and the shortening velocity becomes slower with increasing load. In the case of lower loads, the shortening velocity speed-up and the action potential can be reached earlier, so muscle contraction can be performed in shorter time intervals. Learn more about time here:-https://brainly.com/question/4931057#SPJ4