2. Which of the following best defines the displacement of an object? The distance an object travels
The distance an object travels in the positive (or negative) direction
The net change in position
The net change in position over a given interval of time

Need in all of themmm only answer if you know pls

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.)

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.