If a car engine burns an equivalent of 20,000 joules of energy and attains a kinetic energy of 5,000 j, how much energy is dissipated in the form of heat?

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

Awalk up the phase change graph worksheet

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to. in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?