In 2 to 3 sentences explain the roles of chloroplast and mitochondria in the process of plant cells gaining energy.

Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s.a. determine jay’s mass.b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

What will happen in a hybrid vehicle if current flow becomes too high due to a short?