If the balls were dropped from a height of 1 meter instead of 0.5 meters, how would the potential energy of each ball be affected? CRATER DEPTH (mm) TRIAL 1 TRIAL 2 TRIAL 3 MEAN/AVERAGE STYROFOAM 3 2.3 BALL STEEL BALL 21 20 22 21.0 O The potential energy would increase. O The potential energy would decrease. O The potential energy would stay the same.
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- Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m. When the box hits the floor its kinetic energy is converted into internal energy. O True False O IIa rock with mass0.15kg is placeedin a sling shot and the elastic band of the sling shot is stretched by 70 cm from its relaxed position to store elastic potential energy in it. the spring constant of the elastic band is 28,5 N . the elastic band is then released to launched the rock. what is the speed of the rock when it leaves the sling shot if a) no heat is produced when the Celtic band is released? b: 2.8 J of heat energy are produced when the elastic band is released?I Review I Constants An ideal spring stores potential energy Uo when it is compressed a distance xo from its uncompressed length. sS Part C In terms of xo , how much must the spring be compressed from its uncompressed length to store twice as much energy? Express your answer in terms of xo. nν ΑΣφ ? Submit Request Answer Part D In terms of xo, how much must the spring be compressed from its uncompressed length to store half as much energy? Express your answer in terms of x0. ?
- A 0.5 kg block slides on a rough horizontal table top. Just before it hits a horizontal ideal spring its speed is 4.28 m/s. It compresses the spring 3.59 cm before coming to rest. If the spring constant is 1673.75 N/m, the internal energy of the block and the table top, during the spring compression, must have increased by: a. -4.53 J b. -0.86 J c. -3.50 J d. -5.13 JPart III: Open Response Springs and ropes are ideal. g=10m/s U(x) (joules) 2 1 3 4 5 6. 7 x (meters) The above graph shows the potential energy U(x) of a 0.1 kg object as a function of its position x. Suppose the object has a constant total energy of 4.0 joules, as shown by the dashed line on the graph. 7. (a) Label all points of stable equilibrium and unstable equilibrium on the graph. (b) What happens to the speed of the object as it moves from 2m to 4m? (c) Can the object reach the position x = 0.5 m? Explain. (d) What is the velocity and the acceleration of the object at x = 6.0 m?instructions in photo
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