Ou pull your little sister across a flat snowy field on a sled. Your sister plus the sled have a mass of 34 kg. The rope is at an angle of 33 degrees to the ground. As you pull with a force of 26 N, the sled travels a distance of 47 m. How much work do you do?

Work done is 1026.48 J.

Explanation:

Given :

Mass of both sister and sled , m = 34 kg.

Angle from ground of force, .

Force applied , F = 26 N.

Distance travelled , d = 47 m.

We know, work done is, W = F.d =   ( is angle between F and d )=

Here ,

Putting value of , force and distance in work done equation we get,

Hence , this is the required solution.

total distance travelled = 60 miles

total time taken =1.5 hours

average speed = total distance / total time

60 / 1.5

= 40

therefore, average speed = 40 m/h

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