Author Question: A 220-kg object is lifted at a constant speed through a height of 42 m by a crane. If the crane ... (Read 114 times)

sheilaspns · **on:** Jul 29, 2018

A 220-kg object is lifted at a constant speed through a height of 42 m by a crane. If the crane takes a total time of 1.8 seconds to lift this object, what is the average power required? Use g = 10 m/s2.

A) 25 kW
B) 51 kW
C) 75 kW
D) 100 kW
E) 150 kW

Question 2

Mrs. Jones went on a diet and lost 15 kilograms. How many pounds did she lose?

A) 68 pounds
B) 42 pounds
C) 38 pounds
D) 33 pounds
E) 6.8 pounds