2 years ago

An airplane changes its velocity uniformly from 150 m/s to 60 m/s in 15 s. Calculate:

Physics

1 answer:

Arlecino [84]2 years ago

7 0

Answer:2.5

Explanation:

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a 2.5 kg rock is dropped off a 32 m cliff and hits a spring, compressing it 57cm. what is the spring constant

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2.5 kg because you cant change the weight of the rock

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A ball, which has a mass of 1.25 kg, is thrown straight up from the top of a building 225 meters tall with a velocity of 52.0 m/

Elena-2011 [213]

First we will find the speed of the ball just before it will hit the floor

so in order to find the speed of the cart we will first use energy conservation

$KE_i + PE_i = KE_f + PE_f$

$\frac{1}{2}mv_i^2 + mgh = \frac{1}{2}mv_f^2 + 0$

$\frac{1}{2}(1.25)(52)^2 + 1.25(9.8)(225) = \frac{1}{2}(1.25)v_f^2$

So by solving above equation we will have

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now in order to find the momentum we can use

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3 years ago

HELPP ILL GIVE BRIANLISG

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31. Respiratory System

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33. Nervous System

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2 years ago

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Why does laser beam might appear blue and another laser beam might appear red?

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The red laser will have a hotter temperature than the blue, so it is red because it is hot
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Momentum is usually not exactly conserved in a real world demonstration of momentum conservation. What is a possible reason for

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For any collision occurring in an isolated system, momentum is conserved. The total amount of momentum of the collection of objects in the system is the same before the collision as after the collision.

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