can you please help me with this assignment, please show all the work.

This is Physics 20 (grade 11)- Module 6 - Lesson 1 - Work and Potential/Kinetic Energy

Information For any numerical response question where the answer involves scientific notation, you should Flag question express your answer as follows: If your answer was 5.80 x 10 , you would type: 5.80E7 If your answer was 2.33 x 10-4, you would type: 2.33E-4 Question 1 A customer is patiently waiting in line at the grocery store. Not yet answered They are holding a 2.7 kg bag of apples a height of 1.7 m off the ground. Marked out of 1.00 Calculate the WORK done on the bag of apples if the customer holds it in the air for 10.0 Flag seconds. Answer in units of "Joules", rounded to one decimal place. question Answer:Question 2 A 61.0 kg student runs at a constant velocity up a flight of stairs. The vertical distance of the Not yet answered stairs is 2.5 m. Marked out of Calculate the work done against gravity. Answer in units of "Joules", rounded to one 1.00 decimal place. Flag question Answer: Question 3 A 12000 kg piece of mining equipment is being moved into position at an open-pit mine in Not yet answered Northern Alberta. Marked out of The machine is accelerated by an electric motor from rest to a velocity of 1.7 m/s in 29.00 s by a 2.00 steady net horizontal force. Flag question Calculate the work done by the electric motor as it accelerates the mining equipment as described. Answer in units of Joules. Use Scientific Notation (3 significant digits) to enter your answer. Answer:Question 4 A 5.4 kg box is pulled 14.8 m along a level surface by a rope. The rope makes an angle of 36 with Not yet answered the surface, and the force exerted through the rope is 100.0 N, Marked out of Calculate the WORK done on the box in this scenario. Answer in units of Joules, rounded to 1.00 one decimal place. Flag question Answer:Question 5 A student sets a water bottle (mass = 686 grams) on a table. The tabletop is 1.2 m off the Not yet answered ground. Marked out of A few minutes later they decide to move the bottle up on top of a shelf, 2.1 m off the ground. 1.00 Flag Calculate the CHANGE in the water bottle's gravitational energy. Answer in units of Joules, question rounded to one decimal place. Answer: Question 6 A 1400 kg car is driving down the highway at 69.0 km/h. Not yet answered The driver accelerates the vehicle, DOUBLING the car's kinetic energy. Marked out of 2.00 Calculate the final SPEED of the car (to the nearest 0.1 km/h). Flag question Answer:Question 7 A toy rocket (mass = 2700 grams) accelerates from rest at 9.5 m/s2. Not yet answered Calculate the rocket's kinetic energy after it has accelerated through a distance of 130 Marked out of meters. Answer in units of Joules, rounded to one decimal place. 2.00 Flag question Answer:Question 8 A heavy automotive spring (see below) is placed under a large load by the weight of the car it Not yet answered supports. Marked out of 2.00 Flag question When a load of 2.3 kN is applied to the spring, it compresses by 19.8 cm. Calculate the spring constant of the automotive spring. Answer using Scientific Notation (3 significant digits). Answer:Question 9 Not yet The ENERGY stored in a spring (or other elastic medium) is given by: answered Ee = (1/2) kx2 Marked out of 4.00 Where Ee is the load applied to an elastic material, k is the spring constant, and x is the Flag displacement of the medium from equilibrium. question A student is asked to calculate the energy stored in a spring that is compressed from x = 30 cm to x = 60 cm. The spring has a k-value of 100 N/m. They calculate this as follows: We know the following: Ee = (1/2)kx2 and the difference in the x-values is Ax = (0.60 m - 0.30 m) Then we know AEe = (1/2)k(4x) 2 So --> Ee = (1/2) (100 N/m) (0.60 m - 0.30 m)2 = 4.50 J They then make the following prediction: "Since a 30 cm compression stores 4.50 J of elastic energy in the spring, I predict that if we compress this spring from x = 0 to x = 90 cm, we should store (3) (4.50 J) = 13.50 J of energy in the spring". Analyze the student's work. Did they make any errors, and if so, what did they do wrong? Correct any errors you see using appropriate formulas, graphs, or calculations. Paragraph B