Persons A and B lifts 5 bricks each of 2 kg to the terrace of a building of height 9 m. The details are listed in the table.
| Name of the Person | Time taken to lift the bricks (*) |
| A | 30 |
| B | 60 |
(a) Calculate the work done by them. (g = 10 m/s2)
(b) Calculate the power of A in kilowatt
