Using conservation of energy, how fast would a rollercoaster be traveling at a point half way above the ground where it started from, assuming that is started at rest and 63.5 m above the ground?

Q: 26. An 80.0-kg skydiver jumps out of a balloon at an alti- tude of 1 000 m and opens his parachute…

A: (a)Without parachute, the acceleration is,

Q: (c) In 1971, astronaut Alan Shepard hit a golf ball on the surface of the Moon. The golf ball had a…

A: Disclaimer: “Since you have asked multiple question, we will solve the first question for you. If…

Q: A 36.3-kg child starting from rest slides down a water slide with a vertical height of 12.0 m.…

A: Given data: Mass of the child (m) =36.3 kg Vertical height (h) = 12 m Need to determine the Childs's…

Q: A roller coaster car is approaching the top of a hill with a speed of 7.1 m/s.  The top of the hill…

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Q: If a Saturn V rocket with an Apollo spacecraft attached had a combined mass of 2.9 * 105 kg and…

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Q: Two blocks are connected by a light string that passes over a frictionless pulley as in the figure…

A: First draw the free body diagram and solve for acceleration .  Then, using acceleration and height ,…

Q: A 32.9_kg object is dropped from a height of 84_m. Use the conservation of energy to find the speed…

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Q: Jupiter orbits the Sun at a radius of about 7.8×108 km.7.8×108 km. At this distance the force of…

A: Given :  Radius of orbit of Jupiter , R = 7.8×108 km Force on the Jupiter due to Sun, F = 4.2×1023 N…

Q: The power needed to accelerate a projectile from rest to its launch speed v in a time t is 51.4 W.…

A:

Q: A mass of 8.9 kg is suspended 8 m above the earth. a) What is the potential energy (in J) of the…

A: Potential energy of an object is the energy it stored due to its height. Kinetic energy is the…

Q: Two planets of mass 2 x 1025kg are release from rest 9.0 x 1012 m apart. What is the speed of the…

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Q: A proton (mass m=1.67* 10-27 kg) is being acceleratedalong a straight line at 3.6 1015 m/s2 in a…

A: Since there are multiple questions posted, we will answer the first question for you. If you want…

Q: The engine in an imaginary sports car can provide constant power to the wheels over a range of…

A: initial speed u = 0 final speed v = 120 km/h = 50 x 1000/3600  = 13.89 m/s

Q: ssume that a man lifts 800 kg, the mass of half of the car, and a height of 0.5 m. What is the…

A: Work done = Gravitational potential energy Work done , W = 3924 J (b) Time , t  = 5 seconds Power ,…

Q: If you are running with speed of 6 m/s and your weight is 800 N. Find out (a) your mass, (b) your…

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Q: This golfer has been known to tell some extraordinary stories. Explain if each situation is possible…

A: The law of conservation of energy states that in an isolated system, the sum total of energy is…

Q: A ball of mass m = 6 kg is dropped from a height (hi = 10 m) above the ground. Find the speed of the…

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