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qaws [65]
3 years ago
9

A 4 kg object is moving at a speed of 5 m/sec. How much kinetic energy does the object have? A. 10 joules B. 20 joules C. 50 jou

les D. 100 joules
Physics
1 answer:
sp2606 [1]3 years ago
5 0

Answer:

A. 10 joules

Explanation:

Given parameters:

Mass of object  = 4kg

Speed  = 5m/s

Unknown:

Kinetic energy of the the object  = ?

Solution:

Kinetic energy is the energy due to a moving body.

So;

           mathematically;

    K.E  = \frac{1}{2} x m v²

m is the mass

v is the velocity

  K.E  =  \frac{1}{2}  x 4 x 5  = 10J

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