The quantity 1/2 kx is Select one a the work done on the object by the force b the power supplied to the object by the force c the elastic potential energy of the object d. the kinetic energy of the object.
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- 1. Which of the following is NOT an example of potential energy? a. A running woman b. An incredibly compressed spring G. A tightly stretched rubber band d. An apple dangling off a branch 2. A ball drops from a height h. What more do we need to calculate initial potential energy? a. Elasticity of the Ball b. Mass c. Final Velocity d. Horizontal Displacement1. How much work was done by a machine that exerts a 5000 N force to compress a 10-meter-long steel bar so it becomes 3 meters in length. 2. Find the angle between the 500 N applied force and the 3-meter displacement if the work done is 1500 Joules. Hiii please write a solution thank youA body moves with increasing speed. Which of the following statements is true? A. The net work done on the body is positive, and the kinetic energy is increasing. B. The net work done on the body is positive, and the kinetic energy is decreasing. C. The net work done on the body is zero, and the kinetic energy is decreasing. D. The net work done on the body is negative, and the kinetic energy is increasing. E. The net work done on the body is negative, and the kinetic energy is decreasing.
- 1. A body has a constant acceleration of 5 m/s2 and initial speed of -10m/s. and a time of travel of 4 s. Calculate the total distance covered. 2. a) Calculate the work done on a 1500-kg elevator car by its cable to lift it 40.0 m at constant speed, assuming friction averages 100 N. (b) What is the work done on the lift by the gravitational force in this process? (c) What is the total work done on the lift? Please find attached questions: 28,54,55,62. Your help will be appreciated. Thank you. Aisha.7. A force of 180 N stretches a spring 0.050 m beyond its unstretched length. a. What is the spring constant of this spring? b. What magnitude of force is needed to stretch the spring 0.012 m beyond its unstretched length? C. How much work must be done to stretch the spring 0.012 m beyond its unstretched length? d. What magnitude of force is needed to compress the spring 0.025 m? e. How much work must be done to compress the spring 0.025 m?