Alawn roller is rolled across a lawn by a force of 107 n along the direction of the handle, which is 13.5 ◦ above the horizontal. if the lawn roller develops 69.4 w of power for 33 s, what distance is the roller pushed? answer in units of m.

22.02 m

Explanation:

given,

Force, F = 107 N

angle made with horizontal = 13.5◦

Power develop by the lawn roller = 69.4 W

time = 33 s

distance = ?

Force along horizontal= F cos θ

          = 107 cos 13.5°= 104 N

Power =

69.4 =

W = 2290.2 J

Work done= Force x displacement

displacement=

                      = 22.02 m

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

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