What is the gravitational potential energy of a 1000 kg car on top of a 45 m cliff? Please show all steps
What is the gravitational potential energy of a 1000 kg car on top of a 45...
Calculate the gravitational potential energy of an object, in J, whose mass is 8.12 kg and is positioned 0.5 m above the edge of a cliff.
5. A 1000-kg car is at the top of a hill as shown, where its elevation above the bottom of the hill is 120 m. a. What is its gravitational potential energy? 120 m b. If the cart starts from rest and rolls down the hill with negligible friction and air resistance, what will its kinetic energy be when it reaches the bottom? c. What will be its speed when it reaches the bottom? Suppose instead that there is noticeable...
(a) What is the gravitational potential energy of a two-particle system with masses 3.8 kg and 1.1 kg, if they are separated by 1.2 m? If you triple the separation between the particles, how much work is done (b) by the gravitational force between the particles and (c) by you?
(a) What is the gravitational potential energy of a two-particle system with masses 9.0 kg and 2.8 kg, if they are separated by 2.2 m? If you triple the separation between the particles, how much work is done (b) by the gravitational force between the particles and (c) by you
What is the change in gravitational potential energy of a 67.0 kg student as they climb from ground level to a height of 10.7 meters. Use g= 9.81 m/s2
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
4. The equation mgy for gravitational potential energy is valid only for objects near the surface of a planet. Consider two very large objects of mass m1 and m2, such as stars or planets, whose centers are separated by the large distance r. These two large objects exert gravitational forces on each other.The gravitational potential energy is U = − Gm1m2 r where G = 6.67 × 10−11Nm2/kg2 is the gravitational constant. (a) Sketch a graph of U versus r....
1. Is it possible for a system to have negative gravitational potential energy? a) Yes, as long as the kinetic energy is positive. b) Yes, as long as the total energy is positive. c) Yes, since the choice of zero of gravitational potential energy is arbitrary. d) No, because the kinetic energy of a system must equal its gravitational potential energy. e) No, because you can't have negative energy. 2. In an isolated system, for which of the following types...
A shiny sports car at the top of a vertical cliff has a potential energy of 100 MJ relative to the ground below. Unfortunately, a mishap occurs and it falls over the edge. When it is halfway to the ground, its kinetic energy is a) 25 MJ. b) 50 MJ c) about 100 MJ d) more than 100 MJ Answer: B) 50 MJ
The gravitational potential energy gained by a box having a mass of 2 kg that is lfted to a height of 4 m is 8 joules. asking if it is true or false