2. A cannon is rigidly attached to a carriage, which can move alongfrictionless horizontal rails, but is connected to a post by a largespring, as shown to the right. The cannon then fires a projectile.Including the effects of air resistance, determine whether each45.0°statement below is true or false.The work done by the cannon on the projectile isa.equal to the change in gravitational potential energy of theprojectile.b.During the firing of the projectile, the linearmomentum vector of the system consisting of the cannonand carriage is conserved.After firing the projectile, the mechanical energyof the system consisting of the cannon and carriage isc.conserved.

Answered: Image /qna-images/answer/44de99b5-802e-43a4-9ee0-ecbd62ffa870.jpg

Answered: 2. A cannon is rigidly attached to a…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A 5 kg block is set into motion at a rough inclined plane by angle 30 with an initial speed of 8 m/s .The block comes to rest after moving 3 m along the plane. a. calculate the change in the block's kinetic energ. b.calculate the work done by gravity during this motion. c. calculate the work done by friction on the block during this motion. d. calculate the coefficient of kinetic friction between the block and the incline.
A 0.20 kg plastic cart and a 2.0 kg lead cart can both roll without friction along a horizontal track. Equal-size forces are used to push each cart forward for 1 m, starting from rest. After the force is removed at x  1m, which of the following statements is true?a. The kinetic energy of the plastic cart is less than the kinetic energy of the lead cart.b. The kinetic energy of the plastic cart is equal to than the kinetic energy of the lead cart.c. The kinetic energy of the plastic cart is greater than the kinetic energy of the lead cart.d. There is not enough information to compare the kinetic energies of the two carts.Write an explanation of your choice.
29. In problem no.28, in a simple rectilinear * motion, a mass of 100 Kg is given an acceleration of 2.0 m/s². Find the kinetic energy for time t = 4.0 s. O a. 4.6 KJ Ob. 3.8 KJ O c. 3.2 KJ O d. 2.4 KJ
1. A 0.66-kg object with an initial velocity of 3.30 m/s in the positive x-direction is acted on by a force in the direction of motion. The force does +7.90 J of work. What is the final velocity of the object? (Neglect friction) m/s 2. Car 1 has 8 times the mass of car 2, but only 0.4 as much kinetic energy. What is the ratio between the speeds of the two cars (v₁/v2)? You must type your answer as a numerical value. SO 4 EL R V 5 T G 6 B MacBook Air H & 7 N 8 Dil M K مر
7. A ball is thrown straight up. Neglecting air resistance, which statement is not true regarding the energy of the ball? a. The potential energy decreases while the ball is going up. b. The kinetic energy decreases while the ball is going up. c. The sum of the kinetic energy and potential energy is constant. d. The potential energy decreases when the ball is coming down.
A particle experiences a variable force F= (2+2x+ x^2)N that acts in the x direction. The work done by the applied force as the particle moves from x=-3m to x=+ 3m is equal to what? A. 120J B . 30J C. 18 J D.12J E. 0
Choose all that applies to Kinetic energy. A. Never negative. B. Energy associated with motion of the object C. Can be negative. D. Energy associated with the position of the object.
A. Calculate the work done by the force of gravity when a 7.0 kg object is lifted to a height of 46.0 m above the ground.B. Calculate the velocity with which the object strikes the ground if dropped from that height, using the principle of conservation of energy.C. Calculate the kinetic energy (KE) and the potential energy (PE) of the object at apoint halfway on the path (i.e. at a height of 23.0 m) after it is dropped. To do this, you need to find the object's velocity at that position using an equation of motion. What is the total energy of the object at that point? Does this verify the principle of conservation of energy?
5. Andy, who has a mass of 80 kg, is performing calf raises with just his bodyweight. During the rising part of the calf raise, his center of mass is displaced 0.1 m. What is the work done by Andy's calf muscles during the rising part of the a. calf raise? b. If Andy does the rising part in 0.5 seconds, how much power is produced by his calf muscles? c. What kind of contraction (concentric, eccentric, isometric) is occurring in Andy's calf muscles? Why?
A 500 kg cart rests atop a hill 30.0 m high on a roller coaster. Its gravitational potential energy is measured relative to the bottom of the hill. The cart then rolls down the hill. Which of these best describes what is happening in this situation? a. the total mechanical energy of the cart is decreasing, the kinetic energy of the cart is increasing, and the gravitational potential energy of the cart is increasing b. the total mechanical energy of the cart is increasing, the kinetic energy of the cart is increasing, and the gravitational potential energy of the cart is increasing c. the total mechanical energy of the cart is increasing, the kinetic energy of the cart is increasing, and the gravitational potential energy of the cart is decreasing d. the total mechanical energy of the cart is increasing, the kinetic energy of the cart is decreasing, and the gravitational potential energy of the cart is increasing e. the total mechanical energy of…
1. An object with m = 2.6 kg is on top of a hill and is pressed against spring with k = 300 N/m. The spring is compressed by x = 0.55 m. The hill is 2.5 m high. The object is released and after the spring is decompressed it slides down the hill to the bottom. It does experience riction which does work of W = -92 J. At the bottom of the hill what is the object's kinetic nergy and what is its velocity? %3D %3D
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