How much kinetic energy to propel an object

AI Thread Summary
To propel a 3 kg physics textbook into a trash can at a velocity of 4 meters per second, the required kinetic energy can be calculated using the formula KE = 0.5 * mass * velocity^2. Plugging in the values, the calculation shows that the kinetic energy needed is 24 Joules. The solution appears correct, as it accurately applies the kinetic energy equation without considering wind resistance. Overall, the approach and calculation for determining the necessary energy to launch the object are validated. The discussion confirms the accuracy of the energy requirement for the task.
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Homework Statement


A Physics textbook weighing 3 kg needs must be launched into a nearby trash can. The velocity necessary to accomplish this feat is 4 meters per second when unleashed in its flight.
Assume no wind resistance.
What energy is necessary to accomplish this deed?

Homework Equations


Kinetic energy = .5 * mass * velocity^2

The Attempt at a Solution



.5 * 3 kg * 16 m^2 s^-2 = 24 Joules

Kosher? Thoughts?
 
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