A 60 kg weight person climbs stairs of total height in 20 metre in 2 minutes calculate his power ans(98watt)​

Suppose that a comet that was seen in 563 a.d. by chinese astronomers was spotted again in year 1951. assume the time between observations is the period of the comet and take its eccentricity as 0.986. what are (a) the semimajor axis of the comet's orbit and (b) its greatest distance from the sun?

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

What is the weight of a 8-kg substance in n, kn, kg·m/s2, kgf, lbm·ft/s2, and lbf?