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ome asgmt06: Problem 2 Previous Problem Problem List Next Problem 1 point) What is the kinetic energy difference (entered as a positive value) between a truck of mass 20000 kg travelling along a highway at 80 km/h and an astronaut of mass 75 kg in orbit travelling at 27500 km /h? Include units as appropriate. K Ediff = Preview My Answers Submit Answers You have attempted this problem 0 times. You have 1 attempt remaining Email WeBWork TA Page generated at 06/12/2023 at 01 21pm EDT WeBWork @ 1996-2019 theme math4 ww_.version WeBWork-2 14 palversion PG-2 14 The WieBywork Project ENG Q Search US 6/lome asgmt06: Problem 1 Previous Problem Problem List Next Problem (1 point) A boy pulls a wagon containing his sister a distance of 20.0 m with a force of 50 N at an angle of 35.0" to the horizontal, as shown in the figure below. Treat here the effect of friction to be negligible. F O O d What is the work done on the wagon by the boy? Include units as appropriate. W = Preview My Answers Submit Answers You have attempted this problem 0 times You have 1 attempt remaining Email WeBWork TA SU-PHY31000H/images/1307a141-9134-35c3-80f9-a355c3b16fc1 _14869010-b6c3-3d5d-8d8e-980dbce34556.png Q Search ENG USHome asgmt06: Problem 5 Previous Problem Problem List Next Problem (1 point) A subway train of mass 5.00e + 05 kg is brought to a stop from a speed of 0.40 m/s in 0.50 m by a large spring bumper at the end of its track. What is the force constant k of the spring? Include units as appropriate. k = Preview My Answers Submit Answers You have attempted this problem 0 times. You have 1 attempt remaining Email WeBWork TA Page generated at 06/12/2023 at 01 23pm EDT YeBWork @ 1986-2019 theme! mathewversion. WeBWork-2 14 pg_version PG-2 14 The WebWork Project ENG US 6/12/ Q SearchHome asgmt06: Problem 3 Previous Problem Problem List Next Problem (1 point) A 950 kg car is travelling at 85.0 km/h along a highway. Treat the direction of motion as positive. Include units as appropriate below. a) What is the force on the car needed to bring the car to a stop in a distance of 120 m? F1 = (b) Suppose instead the car collides with a concrete abutment at full speed and is brought to a stop in 1.50 m. What is the force on the car by the abutment? F2 = (c) How many times greater is the magnitude of the second force than the first force Note: You can earn partial credit on this problem. Preview My Answers Submit Answers You have attempted this problem 0 times. You have 1 attempt remaining. Email WeBWork TA Q SearchHome asgmt06: Problem 4 Previous Problem Problem List Next Problem (1 point) This question contains multiple parts: (a) to (b). In a skeleton timed race, surprisingly, little advantage is gained by getting a running start. (This is because the initial kinetic energy is small compared with the gain in gravitational potential energy on even small hills). To demonstrate this, find the final speed and the time taken for a racer who travels 70 m down a 30 slope under the following conditions? Treat the effect of friction to be negligible. Include units as appropriate below. (a) The racer starts the run at rest. Note: You can earn partial credit on this problem. Preview My Answers Submit Answers You have attempted this problem 0 times You have 1 attempt remaining Email WeBWork TA ENG Q Search US