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4.1 Use the work-energy theorem to calculate the magnitude of the velocity of the bullet -block system immediately after the bullet strikes the block, given that the frictional force between the block and surface is 10 N. (5)
Work & Power Worksheet. Work is done when a force moves an object or changes its direction. It is measured in. Rule for Work. Work = Force (in Joules) (in Newtons) W = F X s . X Displacement (in metres) Power is the rate at which measured in . Rule for Power.
AP Physics 1- Work, Energy, & Power Practice Problems ANSWERS FACT: The amount of work done by a steady force is the amount of force multiplied by the distance an object moves parallel to that force: W = F x cos (θ). The units are N. m, which equal a Joule (J). Positive work is done by a force parallel to an object’s displacement.
The Work–Energy Theorem begins to answer that question by stating that a system gains or loses kinetic energy by transferring it through work between the environment (forces being POWER
The Basics of Work, Energy, and Power Objectives: 1. To describe the conditions under which positive and negative work are done and to use the work equation to calculate the amount of work done. 2. To define potential energy, to identify the two forms and the variables that affect the
Work and Power. 1. Calculate the work done by a 47 N force pushing a pencil 0.26 m. 2. Calculate the work done by a 47 N force pushing a 0.025 kg pencil 0.25 m against a force of 23 N. 3. Calculate the work done by a 2.4 N force pushing a 400. g sandwich across a table 0.75 m wide. 4.
The work energy theorem states that the change in (a) kinetic energy of a particle is equal to the work done on it by the net force. (b) kinetic energy of a particle is equal to the work done by one of the forces acting on it.
