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soldi70 [24.7K]
2 years ago
7

A 5 n force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. the time for the collision is _____ seconds.

SAT
1 answer:
Veseljchak [2.6K]2 years ago
8 0

The time for the collision is 3.6S.

<h3>What is collision?</h3>

The collision is an encounter between particles resulting in exchange or transformation of energy.

According to the question,

Force,

F = 5 N

Mass,

m = 3 kg

Velocity,

v₁ = 9 m/s and v₂ = 3 m/s

As we know,

F=m*(v/t)

so,

5=3*(9-3/t)

T=3*6/5

T=18/5

hence, the time for the collision is

T= 3.6S.

Learn more about collision here,

brainly.com/question/13138178

#SPJ1

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How many liters each of a 50% acid solution and a 75% acid solution must be used to produce 90 liters of a 60% acid solution? (R
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The numbers of liters that is needed is 40 liters of 25% solution and 40 liters of 65% solution.

<h3>What is the litters about?</h3>

Note that:

We take x = volume of 25% solution.

We take y = volume of 65% solution.

So, Equation of total volume:

x + y = 80

Hence the equation of amount of acid:

0.25x + 0.65y = 0.45(80)

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Solve x + y = 80 for x.

x = 80 - y

Then Substitute into the second equation.

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x = 40

Therefore, The numbers of liters that is needed is 40 liters of 25% solution and 40 liters of 65% solution.

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