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hram777 [196]
3 years ago
13

Calculate the kinetic energy of a 5.0kg object moving at 4.0 m/s

Physics
1 answer:
Nana76 [90]3 years ago
3 0

Answer:

The answer is

<h2>40 J</h2>

Explanation:

The kinetic energy of an object given it's mass and velocity can be found by using the formula

KE =  \frac{1}{2} m {v}^{2}

where

m is the mass

v is the velocity

From the question

m = 5 kg

v = 4 m/s

The kinetic energy is

KE =  \frac{1}{2}  \times 5 \times  {4}^{2}  \\  =  \frac{1}{2}  \times 5 \times 16 \\  = 5 \times 8

We have the final answer as

<h3>40 J</h3>

Hope this helps you

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Answer:

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Explanation:

From collisions in momentum, we can establish the formula required here which is;

m1•u1 + m2•v2 = m1•v1 + m2•v2

Now, we are given;

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Thus;

(1.5 × 11) + (14 × -5) = (1.5 × -1) + (14 × v2)

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16.5 - 70 = -1.5 + 14v2

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