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Anettt [7]
3 years ago
14

A 57 kg wagon is pulled with a constant net force of 38 N. Calculate the acceleration of the wagon. F = ma

Physics
1 answer:
Dahasolnce [82]3 years ago
4 0

Answer:

<h2>0.67 m/s²</h2>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

a =  \frac{f}{m}  \\

f is the force

m is the mass

From the question we have

a =  \frac{38}{57} =  \frac{2}{3}   \\  = 0.666666...

We have the final answer as

<h3>0.67 m/s²</h3>

Hope this helps you

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Answer:

greater speed will be obtained for the elastic collision,

Explanation:

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Let's start by hitting a ball of clay.

The system is formed by the candle and the clay balls, therefore the forces during the collision are internal and the moment is conserved.

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         p₀ = m v₀

where m is the mass of the ball and vo its initial velocity, we are assuming that the candle is at rest

final instant. After the crash

the mass of the candle is M

         p_f = (m + M) v

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          m v₀ = (m + M) v

          v = \frac{m}{m+M} \ v_o

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          v = \frac{m}{n \ m + M}  v₀

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this case corresponds to an elastic collision whereby the kinetic energy is conserved

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        m (v₀² - v₁²) = M v₂²

let's use the identity

         (a² - b²) = (a + b) (a-b)

we write our equations

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we substitute in equation 1

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we substitute in equation 1 to find v₂

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            v₂ = \frac{2m}{m +M}  \ v_o  

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In the case of elastic collision, the increase in speed is constant with each ball since the total mass remains invariant.

Consequently, greater speed will be obtained for the elastic collision, that is, the ball will bounce.

8 0
3 years ago
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Irina-Kira [14]

Answer:

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Explanation:

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