A ball rolls from x=10m to x=-25m in 2.5 seconds. What was it’s average velocity?

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.)

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

What equation is used to calculate the weight of an object on a plant ?