The 5-kg collar has a velocity of 5 m> s to the right when it is at a. it then travels down along the smooth guide. determine the speed of the collar when it reaches point b, which is located just before the end of the curved portion of the rod. the spring has an unstretched length of 100 mm and b is located just before the end of the curved portion of the rod.

If the force on an object is in the negative direction, the work it does on the object must be [2 points a) negative. b) positive c) the work could be either positive or negative, depending on the direction the object moves

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.)

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest