Arope attached to a truck pulls a 180−kg motorcycle at 9.0m/s. the rope exerts a 400−n force on the motorcycle at an angle of 15∘ above the horizontal. a. what is the work that the rope does in pulling the motorcycle 300m? b. how will your anwer change if the speed is 12m/s? c. how will your answer change if the truck accelerates?

115911.09915 J

Unchanged

Decreased

Explanation:

m = Mass of motorcycle = 180 kg

v = Velocity of motorcycle = 9 m/s

F = Force = 400 N

s = Displacement = 300 m

= Angle above the horizontal = 15°

Work done is given by

The work done is 115911.09915 J

It can be seen that the force applied is constant so it does not matter if the speed of the motorcycle changes.

Tension on the rope would be

Work done

So, the work done would be reduced.

iron would move it is magnetic there is a mag field around the current in the wire

the components of a vector are the parts of the vectors that are to each other.

b perpendicular