A crate is being pulled to the right a distance of 10 m, with applied force 120 N at an angle of 60 degrees to the ground , if the friction on the box is 10 N, calculate the net work done on the crate ?

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here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be