A rock has a mass of 5.71kg and has 482.21j of potential energy. How high off the ground is the rock?
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A rock has a mass of 5.71kg and has 482.21j of potential energy. How high off the ground is the rock?
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- An object with a mass of m = 2.25 kg is traveling with an initial velocity of v, = (5.40î – 1.40j) m/s. (a) Determine its initial kinetic energy. (Give your answer to at least one decimal place.) (b) Determine the amount of work that must be done on the object in order to change its velocity to v; = (7.00oî + 7.00j) m/s.a) What is the kinetic energy of an automobilewith a mass of 1299 kg traveling at a speed of11 m/s?Answer in units of J. b) What speed would a fly with a mass of0.629 g need in order to have the same kineticenergy as the automobile?Answer in units of m/s.A ball has a mass of 6 kg. Suppose it travels at 0.24 m/s. Find the kinetic energy possessed by it.
- 5m μ 7. A mass m = 2 kg is released from the top of an incline plane 5 m long and at an angle of 37° to the horizontal. The mass slips to the bottom of the incline, strikes a spring which compresses and projects the mass back up. The coefficient of friction between the mass and the incline is μ = 0.2. Using energy principles, find how far back up the incline the mass m moves before it comes to rest. 700002 k 37° E mA 17.0 kg object was let go down an incline that is 3.50 m high. The object reaches the bottom of the incline with a speed of 1.30 m/s. Find the amount of energy dissipated by friction?