10. Conservation of Energy

Solving Projectile Motion Using Energy

Ch 5 - Work and Energy - Conservation Of Energy With Projectile Motion.mov

Anderson Video - Ball Toss Example

Projectile Motion with Energy

AP Physics 1: Work and Energy 10: Conservation of Energy: Projectile Problem

A spring-loaded toy gun shoots a <math display="inline"><mrow><mn>3.0</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">g</mi></mrow></math> plastic ball straight up into the air. From the position of the ball when the gun is cocked, with the spring compressed, to the maximum height the ball reaches, is <math display="inline"><mrow><mn>2.5</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">m</mi></mrow></math>. If the spring was compressed <math display="inline"><mrow><mn>2.0</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">cm</mi></mrow></math>, what is the spring constant of the spring? Ignore air resistance.

<p>You are practicing jumping as far as you can. In one attempt, you run and leave the floor with 7 m/s directed at an unknown angle. What maximum height do you reach if your speed at that point is 5 m/s? Ignore air resistance.</p>

Calvin uses a catapult to launch a foam football at Susie. If the ball leaves the catapult at a height of <math display="inline"><mrow><mn>2.0</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">m</mi></mrow></math> and is moving at <math display="inline"><mrow><mn>15</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">m</mi><mo>/</mo><mi mathvariant="normal" class="MathML-Unit">s</mi></mrow></math> when it strikes the ground (he missed), how fast was the football moving when it left the catapult? Ignore air resistance.

A toy gun is mounted on a tabletop. It shoots a small plastic ball at <math display="inline"><mrow><mn>6.0</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">m</mi><mo>/</mo><mi mathvariant="normal" class="MathML-Unit">s</mi></mrow></math>. The ball leaves the toy gun at an angle of 24° above the horizontal, and a height of <math display="inline"><mrow><mn>83</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">cm</mi></mrow></math> above the ground. How fast is the ball travelling when it hits the ground? Use energy concepts.

Calculating Max Height with Energy Conservation

Projectile Motion and Conservation of Energy

Projectile Motion and Conservation of Energy | Physics with Professor Matt Anderson | M11-07

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1. Intro to Physics Units

2. 1D Motion / Kinematics

3. Vectors

4. 2D Kinematics

5. Projectile Motion

6. Intro to Forces (Dynamics)

7. Friction, Inclines, Systems

8. Centripetal Forces & Gravitation

9. Work & Energy

11. Momentum & Impulse

12. Rotational Kinematics

13. Rotational Inertia & Energy

14. Torque & Rotational Dynamics

15. Rotational Equilibrium

16. Angular Momentum

17. Periodic Motion

18. Waves & Sound

19. Fluid Mechanics

20. Heat and Temperature

21. Kinetic Theory of Ideal Gases

22. The First Law of Thermodynamics

23. The Second Law of Thermodynamics

24. Electric Force & Field; Gauss' Law

25. Electric Potential

26. Capacitors & Dielectrics

27. Resistors & DC Circuits

28. Magnetic Fields and Forces

29. Sources of Magnetic Field

30. Induction and Inductance

31. Alternating Current

32. Electromagnetic Waves

33. Geometric Optics

34. Wave Optics

36. Special Relativity

[BOOK PHYS] !CLUTCH

Energy with Non-Conservative Forces

Pendulum Problems

Intro to Energy Types

Energy in Connected Objects (Systems)

Gravitational Potential Energy

Force & Potential Energy

Rollercoaster Problems

Motion Along Curved Paths

Springs & Elastic Potential Energy

Intro to Conservation of Energy

General Chemistry

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