A 30.0 kg object has an initial velocity of 7.00 m/s and a final velocity of 10.0 m/s. The work done on the object is J. (Report the answer to three significant figures.)

Question

Physics

Dominick Suarez

24 May, 08:10

A 30.0 kg object has an initial velocity of 7.00 m/s and a final velocity of 10.0 m/s. The work done on the object is J. (Report the answer to three significant figures.)

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Answers (1)

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Ashton Crosby · Answer 1

The work done in the object, in this case, can also be tantamount or equal to the change in the object's kinetic energy (KE) which can be solved through the equation below.

KE = 0.5mv²

where m is mass and v is the velocity.

Substituting the known values from the given,

KE = 0.5 (30) (10² - 7²) = 765 J

Therefore, the answer is 765 J.