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

- Please help me with this task

Task 2

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- Read the attachment "Uniform Motion Word Problems" worksheet and finish all the 2 paper

- YOU MUST GET ALL THE ANSWERS RIGHT

- Please help me with this task

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? Uniform Motion Word Problems Complete the following showing your work. Remember to include units and the correct significant digits. 1. A car travels 160 km in 2.50 h. What is the speed of the car? A car and driver leave Calgary at noon. The car passes through Red Deer at 2:15 pm and reaches Edmonton at 3:45 pm, including a stop for a meal. Red Deer is 168 km from Calgary and Edmonton is 279 km from Calgary. What is the average speed of the car between Red Deer and Edmonton? The speed limit of most sections ofthe turnpike is 65.0 km/h. If a car travels 450 km in in six hours, was the car exceeding the speed limit? How far above or below the speed limit was the car? A jet plane travels from Calgary to Winnipeg, a distance of 1358 km, in 2.75 h. Determine the speed ofthe jet plane in metres per second. Donovan Bailey of Canada became the world's fastest man when he ran the 100 m in 9.84 5. Calculate Donovan's speed in m/s and km/h. A bullet is shot from a rifle with a speed of 720 m/s. What time is required for the bullet to strike a target 3240.0 m to the east? What is the speed of the bullet in km/h? You and your family are driving to your grandparents' home, which is 95.0 km away. If you drive an average speed of 85.0 km/h, how long will it take you to get there? 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? Boss Question 8. You are on a road trip traveling in a generally SE direetion. you know that you're travelling 30 kin/h [E] while Simultaneously heading 40 km/h [S] assuming you keep traveling at these rates and direction. and knowing that you are 225km from your destination, how long will it take you to get there? 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