The boys tried a second experiment. they built a balloon car like the one seen here. as the gas in the balloon is released, the car moves. ben and dylan discovered that the bigger they blew up the balloon, the farther the car moved. this balloon car is a good model of newton's:

Positrons are spontaneously emitted from the nuclei of

Convection currents are caused by differences in what two things?

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.