2 years ago

A piece of fruit is falling from a tree.

Physics

1 answer:

Lostsunrise [7]2 years ago

8 0

Answer:

gravitational potential energy, kinetic energy, total energy, and final velocity.

Explanation:

hope this helps.

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a) Beth will reach before Alan

b)Beth has to wait 20 min for Alan to arrive

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let 'd' be distance b/w Los Angeles and San Francisco i.e 400 mi

considering ,

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Beth's speed $v_B$ =60mph

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The time required $t_A$ = d/ $v_A$ = 400/50 => 8h

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The time required $t_B=\frac{d}{v_B} =\frac{400}{60} =>6\frac{2}{3} h$ => 6h 40m

Alan will reach at 8:00 a.m +8h = 4:00p.m.

Beth will reach at 9:00 a.m +6h 40m= 3:40p.m.

a) Beth will reach before Alan

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Momentum = (mass) x (speed)

If the speed is zero, then the momentum is zero.

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