What work did you do when you have slowly lifted it 0.80 m upward? you have a 14 kg?

m = mass of the object lifted by you = 14 kg

g = acceleration due to gravity by earth on the object being lifted = 9.8 m/s²

h = height to which the object is lifted slowly = 0.80 m

W = Work done in lifting the object

work done in lifting the object is same as the gravitational potential energy gained by the object. hence

Work done = Gravitation potential energy of object

W = m g h

inserting the values

W = (14) (9.8) (0.80)

W = 109.8 J

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2