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4 years ago

8

A bumper has a non negligible mass. After a collision with an ideal spring, the spring is compressed to a distance of 90% of the

value of its distance when the bumper's mass was negligible. Give a reasonable explanation for this decrease.

1 answer:

Y_Kistochka [10]4 years ago

3 0

Deacceleration causing reverse of speed impact on the body of the frame causing reverse of shockwave.

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Why must one use a reference point to determine whether or not an object is in motion

GaryK [48]

Because there's no such thing as "really" moving.
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Here's an example:
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3 years ago

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ziro4ka [17]

Answer:

it should be a new moon

Explanation:

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3 years ago

An atom is chemically stable when it’s outer_____ is completely filled with _____.

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3 years ago

Suppose two children push horizontally, but in exactly opposite directions, on a third child in a sled. The first child exerts a

anyanavicka [17]

Answer:

Please, read the anser below

Explanation:

1. In order to calculate the acceleration of the children you use the Newton second law for the summation of the implied forces:

$F_2-F_1-F_f=Ma$ (1)

Where is has been used that the motion is in the direction of the applied force by the second child

F2: force of the second child = 92N

F1: force of the first child = 79N

Ff: friction force = 5.5N

M: mass of the third child = 24kg

a: acceleration of the third child = ?

You solve the equation (1) for a, and you replace the values of the other parameters:

$a=\frac{F_2-F_1.F_f}{M}=\frac{96N-79N-5.5N}{24kg}=0.48\frac{m}{s^2}$

The acceleration is 0.48m/s^2

2. The system of interest is the same as before, the acceleration calculated is about the motion of the third child.

3. An image with the diagram forces is attached below.

4. If the friction would be 150N, the acceleration would be zero, because the friction force is higher than the higher force between children, which is 92N.

Then, the acceleration is zero

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storchak [24]

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