Task 1

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- Read the attachment "Energy and Work Problems" and finish all the 4 paper

- YOU MUST GET ALL THE ANSWERS RIGHT

- Also, provide steps too.

- Please help me with this task

- Please take your time, even more than 1 or 2 hours, but make sure ALL answers are correct, triple check all answers

ALL ANSWERS MUST BE CORRECT

Energy and Work Problems

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Science 10 Energy and Work Probiems 1. While bench pressing, you lift a barbell that weighs 345 N a distance of 35 cm. How much work do you do on the barbell? 2. A forklift exerts a force of 9800 N on a load while lifting it a distance of 0.45 m. The forklift then carries the load, at a constant speed, a distance of 175 m across the warehouse to a truck. (a) How much work does the forklift do on the load while lifting it? (b) How much work does the forklift do on the load while carrying it across the warehouse? (Hint: What is the direction ofthe force that the forklift exerts on the load relative to the direction of the motion?) 3. A crane does 4114i of work while lifting a 1766 N statue onto a pedestal. How high does the crane lift the statue? 4. You do 168 J of work on a 67 N box while carrying it up a flight of stairs. if there are 16 steps in the flight of stairs, how high is each step? 5. Warehouse workers have to slide a large crate a distance of 2.2 m across a floor to make room for the forklift to pick up the crate. If the workers do 2850] of work on the crate while pushing it, what force do they exert on the crate? 6. A pulley system called a block and tackle (shown below} allows a mechanic to lift an engine out of a car by exerting a small force over along distance. (a) if the mechanic exerts a force of 280 N on the chain ofthe block and tackle over a distance of 14 m, how much work does the mechanic do on the chain? (b) Assume that the block and tackle does as much work on the engine as the mechanic does on the chain ofthe block and tackle. If the weight of the engine is 2220 N, how high does the block and tackle lift the engine? 7. Determine the amount of work done by the force represented in each force versus position graph. (a) 4.0 3.0 F (N) 2.0 1.0 2.0 3.0 4.0 5.0 0 7.0 8.0 d( m ) (b) F (N) 2.0 4.0 6.0 10.0 12.0 14.0 16.0 18.0 d(m )Final Bosses 1. A pizza delivery man has to lift a VERY LARGE pizza 3 height of 3.85 cm higher than he is already holding it to meet the outstretched arms of the customer. if it takes 116 K] of work on the pizza to lift it this high, what force does he exert an the pizza? 2. You will need to know that Force {N} is equal to mass (kg) multiplied by acceleration (m/sz) for this problem. A fearless space explorer has discovered a new planet with a frictionless surface! He pushes a large crate with a mass of 220kg a distance of 5.3 km, as he does so, it accelerates at a rate of 2m/sz. How much work has our intrepid hero done? 3. lfthe pizza in question 1 accelerates at a rate of 5cm/s2 how heavy is the pizza