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madam [21]
3 years ago
12

An object has a velocity of 8 m/s and a kinetic energy of 480 J. What is the mass of the object? (Formula: )

Physics
2 answers:
Furkat [3]3 years ago
7 0
KE = 1/2 * m * v2

We have to rearrange this so the subject is mass. (because the question asks for the mass of the object) :

Mass = (2 * KE) / v

Now input the values into this equation to get your answer :

Mass = (2 * KE) / v
Mass = (2 * 480) / 8
Mass = 960 / 8
Mass = 120
bulgar [2K]3 years ago
7 0

Answer:

Mass of an object is 15 kg.

Explanation:

It is given that,

velocity of an object, v = 8 m/s

Kinetic energy of an object, KE = 480 J

Kinetic energy of an object is due to the motion of an object. The mathematical relationship is given by :

KE=\dfrac{1}{2}mv^2

Where m is the mass of an object

m=\dfrac{2\times KE}{v^2}

m=\dfrac{2\times 480\ J}{(8\ m/s)^2}

m = 15 kg

Hence, the mass of an object is 15 kg

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