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AveGali [126]
2 years ago
12

A tennis ball is dropped from a height of 3 m and bounces back to a height of

Physics
1 answer:
julsineya [31]2 years ago
5 0

Answer:

To decide where the balls land, we need to determine how long the balls are in the air. Both balls will take 2 seconds to hit the ground.

Explanation:

1) Time played forward : gravity & drag forces are in opposite directions so it takes a longer time to reach the ground. 2) Time played backward : gravity & drag forces are in the same direction so it takes a shorter time to reach the ground.

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Round the following off to required number of significant figures.
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Answer:

140

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A box of unknown mass is sliding with an initial speed vi = 5.60 m/s across a horizontal frictionless warehouse floor when it en
Maksim231197 [3]

We know that the Delta E + W(Work done by non-conservative forces) = 0 (change of energy)

In here, the non-conservative force is the friction force where f = uN (u =kinetic friction coefficient) 

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This will then give us: 

1/2Vi^2-ugd = 1/2V^2 

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6 0
3 years ago
List the planet name and position from the Sun for each one (1, 2, 3)
IgorLugansk [536]

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The planets in order from the sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and finally the dwarf planet Pluto. Most people have at least heard about our solar system and the planets in it.

Explanation:

<h3><u><em>please mark me brainliest</em></u></h3>
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Sholpan [36]

Answer:

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