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- 9. A vertically mounted spring (k = 900 N/m) is compressed by 24.0 cm relative to its unstrained length. A mass (m = 0.22 kg) is placed at rest against the spring. When the spring is released, the mass is launched vertically in the air. What is the speed of the mass (m) when it passes by a point located 9.02 m above the release point? m/sA force of 16 N is applied to a 4.5 kg object (initially at rest) for a time of 5.6 s. What is the speed of the object afterwards? Assume a level, frictionless surface.A proton (mass m = 1.67 × 10-27 kg) is being accelerated along a straight line at 9.80 × 101¹1 m/s² in a machine. If the proton has an initial speed of 5.40 × 104 m/s and travels 3.80 cm, what then is (a) its speed and (b) the increase in its kinetic energy?
- What is the height of an object that has a mass of 3.50 kg and a gravitational potential energy of 546 J? Select one: O a. b. 15.9 m 156 m C. 1530 m O d. 1911 mThe only force acting on a 2.0-kg body as it moves along the x-axis is given by Fx = (12 - 2.0x) N, where x is in m. The velocity of the body at x = 2.0 m is 5.5 i m / s. What is the maximum kinetic energy that the body reaches?A 150 g particle at x = 0 is moving at 8.00 m/sm/s in the +x-direction. As it moves, it experiences a force given by Fx=(0.350N)sin(x/2.00m) what is the particles speed when it reaches x= 3.14 m?