True or False. An object at 2.0 meters above ground has twice as much potential energy than at 0.50 meters above ground.
True or False. An object at 2.0 meters above ground has twice as much potential energy...
How much potential energy does a 25 kg pumpkin have when it is 17 meters above the ground?
An object of mass m is released from a height of h meters above the ground, as shown in figure below. Determine the ratio of the potential energy to the kinetic energy at point A m 1 0.3 h LOR 3/7
4. A mass of 2 kg is held 4 meters above the ground. The gravitational potential energy of this object, relative to the ground, is ___. 5. Which is easier, stopping a 1000 kg car traveling at 40 m / s or a 2000 kg car traveling at 20 m / s? 8. Suppose an airplane fires bullets in the same direction it travels. Does the momentum of the plane increase, decrease or remain the same? Explain
The gravitational potential energy of an object is always positive? True or false. Explain your answer.
Indicate whether each item is true or false. If an item is false, please correct it so that it is true. Speed is a scalar quantity. Work and energy are vector quantities. Objects that are not moving cannot have any work done to them. Pressure is uniform throughout a fluid, regardless of depth Density of a material changes as the temperature of the material changes. Solids are always more dense than liquids. Liquids are always more dense than gases Falling...
A 15kg object falls a distance of 5.0 meters. How much work does gravity do on the object during this motion? Use the work-energy principle (from chapter 6- NO POTENTIAL ENERGY) to determine the speed of the object just as it reaches the ground. Assume there is no air resistance and the object starts from rest.
3. A 4kg weight is held 6m above the ground. (a) How much potential energy does the 4kg weight have at the height of 6m? answer (b) If the weight was dropped, how much kinetic energy would it have just as it hits the ground? answer (c) How fast would the weight be moving at a height of 3m? answer (d) How fast would the weight be moving as it hits the ground? answer
An object has 50J of gravitational potential energy. Which of the following statements is true? The object must also have 50J of kinetic energy. Gravity can do 50J of work on the object The total energy of the object must also be 50J. o Gravity has already done 50J of work on the object.
An 80 kg object is dropped from rest from a height of 25 meters above the ground. Use the concept of energy conservation to find its speed when it is 10 meters above the ground.
True or False: The pressure on your ears is twice as much if you dive twice as deep in water. Explain your answer using appropriate physics. Remember that the best answers use examples, numbers and diagrams as support.