How can you use a screen to
determine whether an image is real or virtual?

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.)

Which articulations allow for greatest range of motion?

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