Work energy theorem Study guides, Class notes & Summaries

PHY-102: Energy and Circular Motion Exercises Complete the following exercises. 1. A rifle with a longer barrel can fire bullets with a larger velocity than a rifle with a shorter barrel. a. Explain this using the impulse-momentum theorem. By the theory of momentum, change in momentum of an object equals the impulse applied to it meaning that the long barrel of the rifle covers a huge amount of motion of the bullet since the bullet receives more impulse from the expanding gases with...

Kinetic Energy Exam Questions with Correct A Which formula can be used to find velocity if kinetic energy and mass are known? v = (square root)1/2(KE)(m) v = (square root)2m/KE v = (square root)KE(m) v = (square root)2KE/m - Answer-v = (square root)2KE/m A 20.0 kg object is at rest, and then speeds up to 16.0 m/s. How much work was done on this system? 320 J 2,560 J 2,880 J 5,120 J - Answer-NOT 320 J Which best summarizes a concept related to the work-energy theorem? When work is ...

GIZMOS Inclined Plane – Simple Machine Graded A+ 2023. Answer Key Vocabulary: coefficient of friction, efficiency, force, free-body diagram, friction, inclined plane, mechanical advantage, mechanical energy, normal force, resultant force, simple machine, vector, work, work-energy theorem Prior Knowledge Questions (Do these BEFORE using the Gizmo.) [Note: The purpose of these questions is to activate prior knowledge and get students thinking. Students are not expected to know the answ...

AP Physics 1 Formula Sheet Quiz 2023 Update v = v₀ + at - 1st kinematic equation x = x₀ + v₀t + ½at² - 2nd kinematic equation v² = v₀² + 2a(∆x) - 3rd kinematic equation a = ∑F/m = Fnet/m - Newton's 2nd Law (solved for acceleration) |Ff| = µ|Fn| - Force of friction Definition a = v²/r - Centripetal acceleration p = mv - Linear Momentum ∆p = F∆t - Impulse Momentum Theorem K = ½mv² - Kinetic energy (translational) ∆E = W = Fd = Fdcos(θ) - Work Energy Theorem /...

Crumple Zones Gizmo - Student Exploration_2020 | Questions & Answers {100%} Name: Date: Student Exploration: Crumple Zones Vocabulary: acceleration, airbag, collision avoidance system, crash test dummy, crumple zone, force, kinetic energy, Newton’s laws of motion, safety cell, seat belt, work, work-energy theorem Prior Knowledge Questions (Do these BEFORE using the Gizmo.) Two burglars run down an alley at night, trying to escape the cops. Jack is carrying a rigid metal sa...

Grade 12 IEB definitions Physics 2023 Update Freefall - ANS-when the only force acting on an object is gravity conventional current - ANS-Current that flows from the positive side of the battery to the negative side motor effect - ANS-The motor effect is where a current carrying wire (or any other conductors) is put between magnetic poles, the magnetic field around the wire interacts with magnetic field it has been placed in. This causes the magnet and the conductor to exert forces o...

Conceptual Physics Practice Test Questions and AnSpeed - Answer-How fast an object moves; the distance traveled per unit of time. Instantaneous speed - Answer-The speed at any instant. Average speed - Answer-The total distance traveled divided by the time of travel. Velocity - Answer-An object's speed and direction of motion. Vector quantity - Answer-A quantity that has both magnitude and direction. Scalar quantity - Answer-A quantity that has only a magnitude, not a direction. Accelerat...

NIFE Engines 2023, Top Questions and answers, 100% Accurate. VERIFIED. EXPLAIN Bernoulli's Equation, given dynamic pressure, static pressure, and total pressure - - Bernoulli's equation Pt=Pdynamic+Pstatic Pstatic is potential of fluid molecules at rest. Called pressure in generator Pdynamic is kinetic energy of fluid molecules in motion. Called velocity in generator Describe Nozzle's effect on velocity and pressure and which subsonic and supersonic airflow shapes - -Always increase v...

NIFE Engines 2023, Top Questions and answers, 100% Accurate. VERIFIED. EXPLAIN Bernoulli's Equation, given dynamic pressure, static pressure, and total pressure - -Bernoulli's equation Pt=Pdynamic+Pstatic Pstatic is potential of fluid molecules at rest. Called pressure in generator Pdynamic is kinetic energy of fluid molecules in motion. Called velocity in generator Describe Nozzle's effect on velocity and pressure and which subsonic and supersonic airflow shapes - -Always increase ...

How can you calculate the mechanical advantage a simple machine provides? divide the output force by the input force How can a simple fixed pulley make a job easier? by changing the direction at which the force needs to be applied A pulley system has a mechanical advantage of 3, and an object weighing 9 Newtons must be lifted 15 meters. How much force must be applied to lift the object? Use the following equation to find the answer:MA=Fo/Fi 3 N How is the work energy the...