A 1500 kg car starts from rest on a horizontal road and gains a speed of 72 km/h in 30 s. (a) What is its kinetic energy at the end of the 30 s? (b) What is the average power required of the car during the 30 s interval? (c) What is the instantaneous power at the end of the 30 s interval, assuming that the acceleration is constant?

Thursday, March 23, 2017 Chapter 6 What is Power - Power: has been deﬁned as a quality of the person, the position, the place, the situation or the relationship - textbook deﬁntion—is deﬁned as the capacity to affect the outcomes of oneself, others and the environment that can be either direct or indirect - Direct use of power - Dynamic Interdependence...