In 2004 olympics, shawn crawford ran 200m in 19.79 sec .justin gatlin ran the 100 m race in 9.85 seconds. a) calculate their speeds (round to two decimal places) b) whose speed was faster and by how much

In order to place a satellite into orbit, it requires enough fuel to supply the necessary mechanical energy. into what types of mechanical energy does the fuel get transformed?

How does the kinetic energy of a charge change as the charge moves under the effect of an electric field from higher potential to lower potential? a.the kinetic energy increases.b.the kinetic energy decreases.c.the kinetic energy remains the same.d.the kinetic energy is always zero.

Which notation is used to represent an alpha particle? a. b. c. d.