Ch 08: Conservation of EnergyWorksheetSee all chapters
All Chapters
Ch 01: Units & Vectors
Ch 02: 1D Motion (Kinematics)
Ch 03: 2D Motion (Projectile Motion)
Ch 04: Intro to Forces (Dynamics)
Ch 05: Friction, Inclines, Systems
Ch 06: Centripetal Forces & Gravitation
Ch 07: Work & Energy
Ch 08: Conservation of Energy
Ch 09: Momentum & Impulse
Ch 10: Rotational Kinematics
Ch 11: Rotational Inertia & Energy
Ch 12: Torque & Rotational Dynamics
Ch 13: Rotational Equilibrium
Ch 14: Angular Momentum
Ch 15: Periodic Motion (NEW)
Ch 15: Periodic Motion (Oscillations)
Ch 16: Waves & Sound
Ch 17: Fluid Mechanics
Ch 18: Heat and Temperature
Ch 19: Kinetic Theory of Ideal Gasses
Ch 20: The First Law of Thermodynamics
Ch 21: The Second Law of Thermodynamics
Ch 22: Electric Force & Field; Gauss' Law
Ch 23: Electric Potential
Ch 24: Capacitors & Dielectrics
Ch 25: Resistors & DC Circuits
Ch 26: Magnetic Fields and Forces
Ch 27: Sources of Magnetic Field
Ch 28: Induction and Inductance
Ch 29: Alternating Current
Ch 30: Electromagnetic Waves
Ch 31: Geometric Optics
Ch 32: Wave Optics
Ch 34: Special Relativity
Ch 35: Particle-Wave Duality
Ch 36: Atomic Structure
Ch 37: Nuclear Physics
Ch 38: Quantum Mechanics
Sections
Intro to Conservation of Energy
Energy with Non-Conservative Forces
Escape Velocity
Conservative Forces & Inclined Planes
Motion Along Curved Paths
Energy in Connected Objects (Systems)
Solving Projectile Motion Using Energy
Springs & Elastic Potential Energy
Force & Potential Energy
LearnAdditional Practice
Next SectionSprings & Elastic Potential Energy

Solution: A projectile is fired at an upward angle of 48.0° from the top of a 130-m-high cliff with a speed of 180 m/s m m/s. What will be its speed when it strikes the ground below? (Use conservation of energy

Problem

A projectile is fired at an upward angle of 48.0° from the top of a 130-m-high cliff with a speed of 180 m/s. What will be its speed when it strikes the ground below? (Use conservation of energy. Neglect air resistance.)

Next
Practice Problems
An archer performs 20.0 J of work to stretch a bow...
A 7 kg projectile is fired at an initial speed of ...
In the high jump, the kinetic energy of an athlete...
A 0.40-kg ball is thrown with a speed of 8.5 m/s ...
For its size, the common flea is one of the most a...
A ball is thrown upward with an initial velocity o...
A film of Jesse Owenss famous long jump in the 193...
A cannon tilted up at a 31.0 angle fires a cannon...
In the figure, water balloons are tossed from the ...
A 2.8-kg block slides over the smooth, icy hill sh...
A sled with rider having a combined mass of 125 kg...
A baseball is thrown from the roof of exttip{h}{...
A 62-kg skier starts from rest at the top of a ski...
It's been a great day of new, frictionless snow. J...
A projectile is fired at an upward angle of 48.0° ...
A 63 kg skier starts from rest at the top of a ski...
A projectile is fired at an initial speed of v 0 a...
A boy starts at rest and slides down a frictionles...
A 20.0-kg cannonball is fired from a cannon with m...
Review. A baseball outfielder throws a 0.150-kg ba...
A child of mass m starts from rest and slides with...
Previous SectionEnergy in Connected Objects (Systems)
Next SectionSprings & Elastic Potential Energy