/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 8 Does your car's kinetic energy c... [FREE SOLUTION] | 91影视

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Chapter 6: Problem 8

Does your car's kinetic energy change if you drive at constant speed for 1 hour?

Short Answer

Expert verified
No, the kinetic energy of the car does not change when it travels at a constant speed for 1 hour, or any other length of time, because kinetic energy depends solely on velocity, not on how long the velocity is sustained.

Step by step solution

01

Understand the basic physics

Kinetic energy is the energy a moving object possesses due to its motion. The formula to calculate it is \( KE = 1/2 m v^2 \) where \( m \) is mass and \( v \) is velocity.
02

Apply the physics to the specific problem

The question asks whether the car's kinetic energy changes if it travels at a constant speed for an hour. Since speed (or velocity) is the only variable in the kinetic energy equation that could change (we assume the car's mass stays constant), and we're told that the speed is constant, we can deduce that the kinetic energy will also remain constant.
03

Formulate the conclusion

By applying the principles of physics and the formula for kinetic energy, we can conclude that when a car drives at a constant speed for any given amount of time, its kinetic energy does not change because there is no change in velocity.

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