# Science

 What is the kinetic energy of a 1000 kg rollercoaster moving at a speed of 20 m/s? 200,000 j If the rollercoaster above was moving twice as fast, what is the new KE? Regular mass: 1000 kg speed: 20m/s 800,000 J If the rollercoaster is number 1 had double the mass and the same speed, what would the kinectic energy be? regular mass: 1000 kg speed : 20 m/s 400,000 Missy Diwater, the platform diver for the Ringling Bros Circus, had a kinetic energy of 15,000 J just before she hit the water. If her mass is 50 kg, what is her speed 24.5 m/s= v A 750 kg compact car travels at 100 km/hr and has 3,750,000 J of kinectic energy. What is the KE of the car if it travels at 50 km/hr 933,500 J John has a 50 kg object suspended in air, 50 m above the ground. If the object is dropped, how much work will be done? 24,500 J Mrs. Jacobs dropped an object from a height of 10 m. What was the weight of the object if it did 50 J of work? 0.51 kg A cart is loaded with a brink and pulled at a constant speed along an inclined plane to the height of a seat top. If the mass of the brick and cart is 3.0 kg and the seat is 0.45 m high, what is potential energy of the brick and cart when they reach the top? 13.23 J A moving car has kinectic energy. If it speeds up until it is going 4 times the original speed, how much kinetic energy does it have compared to the original. sixteen times larger When the mass of a moving object is doubled with no change in speed, by how much will the kinetic energy change? KE doubles if mass doubles AuthorJennyhstar130 ID214845 Card SetScience DescriptionPotential and Kinetic Energy calculations Updated2013-04-21T18:31:54Z Show Answers