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1. A girl and a boy exert a force to move a crate with a mass of 40kg horizontally a distance of 13 m. The girl is pushing the crate with a force of 75 N 22 degrees below the horizontal and the boy is pulling with a force of 75N 32 degrees above horizontal. a) Determine the total work done by the boy and girl on the crate?[ 4 marks] b) How much work is done by the floor on the crate? [3 marks ] c) If the cart experiences friction = 0.01, calculate the work done on the crate. [ 4 marks ] d) of the girl is pulling the crate on a 20 degrees inclined plane with a force of 75N at a 10 degrees above the inclined plane and the boy is pushing with a force of 65 N against a friction of = 0.01 for the same distance 13m calculate the work done on the crate and the maximum height reached at the top of the hill [5 marks ]