The weight of a large steel ball is 14700 newton’s. what power is used in raising this steel ball to a height of 30 meters if the work is performed in 30 seconds?

W = weight of steel ball = 14700 N

m = mass of steel ball =

h = height raised = 30 m

Potential energy gained is given as

U = mgh

U = 1500 x 9.8 x 30

U = 441000 J

t = time taken = 30 sec

P = power used

Power is given as

P =

inserting the values

P =

P = 14700 Watt

carla slowed down in the beginning of her trip, stopped, and then sped up

i think the answer is a, hope this is right, that would be my best guess.