Homework Answers
as per the law of conservation of energy energy is neither be created nor be distroyed . at maximm height P.E is maximum and K.E. is zero and at lowest height it is vice-versa .
so total mechanical energy will be constant .
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98 joules Question 2 1 pts An object is falling freely due to gravity. If no...
When an object falls in Earth's gravitational field (think of a skydiver jumping from an airplane or a marble falling in a tank of oil)
When an object falls in Earth's gravitational field (think of a skydiver jumping from an airplane or a marble falling in a tank of oil), it accelerates due to the force of gravity. If gravity were the only force acting on the object, then all objects-elephants and feathers alike would fall at the same rate. But gravity is not the only force present. Moving objects also experience resistance or friction from the surrounding medium; it would be air resistance for...
D Question 2 2 pts A donkey pulls a crate up a rough, inclined plane at...
D Question 2 2 pts A donkey pulls a crate up a rough, inclined plane at constant speed. Which one of the following statements concerning this situation is true? The gravitational potential energy of the crate is increasing. O The donkey does "negative" work in pulling the crate up the incline. The work done on the crate by the normal force of the plane is not zero joules. The work done on the object by gravity is zero joules. Two...
The energy of motion is called: Kinetic energy. potential energy, inertial energy. Power. In an inelastic...
The energy of motion is called: Kinetic energy. potential energy, inertial energy. Power. In an inelastic collision: momentum is conserved. kinetic energy is conserved, both (a) and (b). If the velocity of a moving object is doubled and its mass is cut in half, the kinetic energy of the object is; remains the same, doubled quadrupled, cut in half. When the net work done on an object is speed of the object is me on an object is zero; the...
i need all answers please 6 pts A particle is moving in the positive x-direction under...
i need all answers please
6 pts A particle is moving in the positive x-direction under the influence of the force associated with the potential energy function shown below. What can you conclude about the force on the particle and its speed as it is going through point a in the x-axis? U The force is zero and the speed is decreasing. the force is in the positive x-direction and the speed is increasing. The force is in the negative...
Question 10 1 pts How much work (in Joules) is required to change the kinetic energy...
Question 10 1 pts How much work (in Joules) is required to change the kinetic energy of an object by 42 Joules?
Question 21 1 pts The direction of the buoyancy force on a rock that sits on...
Question 21 1 pts The direction of the buoyancy force on a rock that sits on the bottom of a lake is down. up. zero. There is no buoyancy force when the rock is on the bottom. impossible to determine. Question 22 3 pts When an object is falling in air at terminal velocity, (choose all correct answers) the net force on the object is down. the net force on the object is zero. the net force on the object...
An object, which is initially at rest on a frictionless horizontal surface, is acted upon by...
An object, which is initially at rest on a frictionless horizontal surface, is acted upon by four constant forces. Fi is 11.1N acting due east, F2 is 41.2 N acting due north, F3 is 43.5 N acting due west, and F4 is 10.8 N acting due south. How much total work is done on the object in 2.22 s, if it has a mass of 220kg? total work done on obiect: Which type of energy is changing for the object...
An object, which is initially at rest on a frictionless horizontal surface, is acted upon by...
An object, which is initially at rest on a frictionless horizontal surface, is acted upon by four constant forces. F is 21.6 N acting due east, F2 is 28.6 N acting due north, F3 is 43.5 N acting due west, and Fl is 10.8 N acting due south. How much total work is done on the object in 2.22 s, if it has a mass of 22.0 kg? total work done on object: Which type of energy is changing for...
An object, which is initially at rest on a frictionless horizontal surface, is acted upon by...
An object, which is initially at rest on a frictionless horizontal surface, is acted upon by four constant forces F1 is 11.1 N acting due East, F2 is 28.6 N acting due North, F3 is 43.5 N acting due West, and F4 is 20.7 N acting due South. How much total work is done on the object in 3.33 seconds, if it has a mass of 18.0 kg? Number Units Which type of energy is changing for the object while...
An object, which is initially at rest on a frictionless horizontal surface, is acted upon by...
An object, which is initially at rest on a frictionless horizontal surface, is acted upon by four constant forces F1 is 14.6 N acting due East, F2 is 28.6 N acting due North, F3 is 52.1 N acting due West, and F4 is 17.4 N acting due South. How much total work is done on the object in 2.22 seconds, if it has a mass of 14.0 kg? Number Units Which type of energy is changing for the object while...
When an object falls in Earth's gravitational field (think of a skydiver jumping from an airplane or a marble falling in a tank of oil), it accelerates due to the force of gravity. If gravity were the only force acting on the object, then all objects-elephants and feathers alike would fall at the same rate. But gravity is not the only force present. Moving objects also experience resistance or friction from the surrounding medium; it would be air resistance for...
D Question 2 2 pts A donkey pulls a crate up a rough, inclined plane at constant speed. Which one of the following statements concerning this situation is true? The gravitational potential energy of the crate is increasing. O The donkey does "negative" work in pulling the crate up the incline. The work done on the crate by the normal force of the plane is not zero joules. The work done on the object by gravity is zero joules. Two...
The energy of motion is called: Kinetic energy. potential energy, inertial energy. Power. In an inelastic collision: momentum is conserved. kinetic energy is conserved, both (a) and (b). If the velocity of a moving object is doubled and its mass is cut in half, the kinetic energy of the object is; remains the same, doubled quadrupled, cut in half. When the net work done on an object is speed of the object is me on an object is zero; the...
i need all answers please
6 pts A particle is moving in the positive x-direction under the influence of the force associated with the potential energy function shown below. What can you conclude about the force on the particle and its speed as it is going through point a in the x-axis? U The force is zero and the speed is decreasing. the force is in the positive x-direction and the speed is increasing. The force is in the negative...
Question 10 1 pts How much work (in Joules) is required to change the kinetic energy of an object by 42 Joules?
Question 21 1 pts The direction of the buoyancy force on a rock that sits on the bottom of a lake is down. up. zero. There is no buoyancy force when the rock is on the bottom. impossible to determine. Question 22 3 pts When an object is falling in air at terminal velocity, (choose all correct answers) the net force on the object is down. the net force on the object is zero. the net force on the object...
An object, which is initially at rest on a frictionless horizontal surface, is acted upon by four constant forces. Fi is 11.1N acting due east, F2 is 41.2 N acting due north, F3 is 43.5 N acting due west, and F4 is 10.8 N acting due south. How much total work is done on the object in 2.22 s, if it has a mass of 220kg? total work done on obiect: Which type of energy is changing for the object...
An object, which is initially at rest on a frictionless horizontal surface, is acted upon by four constant forces. F is 21.6 N acting due east, F2 is 28.6 N acting due north, F3 is 43.5 N acting due west, and Fl is 10.8 N acting due south. How much total work is done on the object in 2.22 s, if it has a mass of 22.0 kg? total work done on object: Which type of energy is changing for...
An object, which is initially at rest on a frictionless horizontal surface, is acted upon by four constant forces F1 is 11.1 N acting due East, F2 is 28.6 N acting due North, F3 is 43.5 N acting due West, and F4 is 20.7 N acting due South. How much total work is done on the object in 3.33 seconds, if it has a mass of 18.0 kg? Number Units Which type of energy is changing for the object while...
An object, which is initially at rest on a frictionless horizontal surface, is acted upon by four constant forces F1 is 14.6 N acting due East, F2 is 28.6 N acting due North, F3 is 52.1 N acting due West, and F4 is 17.4 N acting due South. How much total work is done on the object in 2.22 seconds, if it has a mass of 14.0 kg? Number Units Which type of energy is changing for the object while...
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