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Instruction: Do as required. Present in writing the full details of your answer or solutions. The grades you earn for each item will be based on correctness, completeness and clarity of presentation. PROBLEM 5.1 1. A 8 kg mass and a 20 kg mass are tied to a light string and hung over a frictionless pulley. What is their acceleration? a. 3.915 m/s2 c. 4.315 m/s2 b. 4.204 m/s2 d. 3.395 m/s2 PROBLEM 5.3 3. A lady pulls a cart with a force of 1800 N. Neglecting friction, if the cart changes from resting to a speed of 1.25 m/'s in a distance of 0.2 m, what is the total mass of the cart? a. 715 kg c. 480 kg b. 460 kg d. 220 kg PROBLEM 5.5 5. A man is pulling a 28 kg cart with a force of 100 N. Neglecting friction, how much time does it take to get the cart from rest up to 2 m/s? a. 0.66 s C. 0.76 s b. 0.56 s d. 0.86 s