please help with questions 20,21, and 22 20. Student A lifts a 40.-newton box from the floorto a height of 0.30 meter in 2.0 seconds. StudentB lifts a 30.-newton box from the floor to aheight of 0.40 meter in 4.0 seconds. Comparedto student A, student B does(1) less work but develops more power(2) more work but develops less power(3) the same work but develops less power(4) the same work but develops more power21. A 5.0 x 10²-newton girl develops 250 watts ofpower as she runs up two flights of stairs to alanding a total of 5.0 meters vertically above herstarting point. Calculate the time required forthe girl to run up the stairs.22. A motor having a maximum power rating of8.1 x 10 watts is used to operate an elevatorwith a weight of 1.8 × 104 newtons. What isthe maximum weight this motor can lift at anaverage speed of 3.0 meters per second?(1) 6.0 x 10 N(2) 1.8 x 10 N(3) 2.4 x 104 N(4) 2.7 × 10ª N

Name: please help with questions 20,21, and 22 20. Student A lifts a 40.-new
Uploaded: 2024-03-20T06:57:25.000Z
Channel: Bartleby
Description: please help with questions 20,21, and 22 20. Student A lifts a 40.-newton box from the floorto a height of 0.30 meter in 2.0 seconds. StudentB lifts a 30.-newton box from the floor to aheight of 0.40 meter in 4.0 seconds. Comparedto student A, studen