Aparticle moves along the x axis according to the equation x = 6t², where x is in meters and t is in seconds. therefore:
a. the acceleration of the particle is 6 m/s²
b. t cannot be negative
c. the particle follows a parabolic path
d. each second the velocity of the particle changes by 9.8 m/s
e. none of the above

If you touch a hot light bulb and get burned, that is an example of a. radiation b. convection c. conduction

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.

When barack obama was running for president, at a campaign stop he tried to bowl, something he isn't very good at. the media loved it because he threw a gutter ball while they were all watching. this is an example of: