A 12 kg ball falls from height of 27. What willbe potential energy of the ball after 1 second? Use g = 9.8 m/s ^ 2 Calculate answer to one decimall
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A: Given data: mass m = 4 kg height h = 29 m time t = 1 sec
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A: Kinetic energy gained equals the change in potential energy. Ekinetic=Utotal-Uhalfway=mgh-mgh2=mgh2
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Q: What is the total mechanical energy
A: Since there is no friction Total energy will conserved Total energy at A = Total energy at B
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- A weight lifter raises a 100 kg barbell to a height of 2 m. what is the barbell's potential energy? Calculate answer to one decimal.A person drops a brick from the top of a building. The height of the building is 400.0 m and the mass of the brick is 1.70 kg. (a) Calculate the potential energy (in J) at the top of the building. J (b) Calculate the speed of the brick right before it touches the ground. m/sA race car with a mass of 1850 kg accelerates from rest down a race track at a rate of 21.0 m/s2. If the track is 400m long, what is the gain in kinetic energy of the car when it reaches the end of the track?
- A 0.42 kg particle has a speed of 5.0 m/s at point A and kinetic energy of 7.5 J at point B. (a) What is its kinetic energy at A? (b) What is its speed at point B? lea ng m/s (c) What is the total work done on the particle as it moves from A to B? Need Help? Read It ds.How much potential energy due to gravity would a person have if he is standing on top of the building that is 1000 cm high? Assume that he has a mass of 50 kg.How much potential energy does a person of mass 82kg have if they are standing at the top of a building that is 59.6 m high? sumbit your answer is exponential form.
- When a spring is compressed by 2.0 cm, its spring potential energy is 16.9 J. What will its spring potential energy be if it is stretched by 4.0 cm, in Joule? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.A roller coaster in an amusement park has a total length of 600m and a single ride session takes about 10mins. What would be the work done by gravity acting on a passenger during one session?