Question

An object has a velocity of 8 m/s and a kinetic energy of 480 J. What is the mass of the object? (Formula: ) 7.5 kg 15 kg 60 kg 120 kg

Answer 1

15 kg

Step-by-step explanation:

hope it helped

Answer 2

Hello!

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

We have the following data:

KE (Kinetic Energy) = 480 J

m (mass) = ? (in Kg)

v (speed) = 8 m/s

Formula to calculate kinetic energy:

`KE = (1)/(2) *m*v^2`

Solving:

`KE = (1)/(2) *m*v^2`

`480 = (1)/(2) *m*8^2`

`480 = (1)/(2) *m*64`

`480*2 = 64*m`

`960 = 64m`

`64m = 960`

`m = (960)/(64)`

`\boxed{\boxed{m = 15\:Kg}}\end{array}}\qquad\checkmark`

Answer:

15 kg

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I Hope this helps, greetings ... Dexteright02! =)