Subjects

Sections | |||
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Intro to Energy | 15 mins | 0 completed | Learn |

Intro to Calculating Work | 36 mins | 0 completed | Learn |

Work By Gravity & Inclined Planes | 40 mins | 0 completed | Learn |

Work By Variable Forces (Springs) | 47 mins | 0 completed | Learn |

Net Work & Kinetic Energy | 39 mins | 0 completed | Learn |

More Work-Energy Problems | 39 mins | 0 completed | Learn |

Power | 20 mins | 0 completed | Learn |

Solution: A boy in a wheelchair (total mass 47.0 kg) has speed 1.40 m/s at the crest of a slope 2.60 m high and 12.4 m long. At the bottom of the slope his speed is 6.20 m/s. Assume air resistance and rolling r

A boy in a wheelchair (total mass 47.0 kg) has speed 1.40 m/s at the crest of a slope 2.60 m high and 12.4 m long. At the bottom of the slope his speed is 6.20 m/s. Assume air resistance and rolling resistance can be modeled as a constant friction force of 41.0 N. Find the work he did in pushing forward on his wheels during the downhill ride.

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You need to raise a heavy block by pulling it with...

A 20.0-kg crate sits at rest at the bottom of a 15...

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14.0-kg
package in a mail-sorting room s...

A
7.00-kg
package slides
2.80 m
do...

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How much work is done by the gravitational force w...

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Determine the work a hiker must
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A 0.050-kg rock moves from the origin to the point...

The cable of a crane is lifting a
750 kg
gi...

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An object released from rest at the top of a 30.0°...

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A block of mass 10.0 kg slides 16.0 m down a 36.9°...

A block of mass 10.0 kg slides 16.0 m down a 36.9°...

A 1.75 m tall person lifts a 1.65 kg book off the ...

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A ramp is inclined at 36.9° above the horizontal. ...

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When an object is moved from rest at point A to re...

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A boy in a wheelchair (total mass 47.0 kg) has spe...

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A 1.6 kg book is lying on a 0.76-m-high table. You...

Spiderman, whose mass is 80.0 kg, is dangling on t...

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In 1990, Walter Arfeuille of Belgium lifted a 281....

The record number of boat lifts, including the boa...

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