Imagine an object of mass M pushed by a force F, so it accelerates. Now assume the mass is changed to 3 times the original, and the net force acting on the object is 4 times the original? How many times the original acceleration does the object have now?

What is the measure of a change in an objects velocity?

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?

While carrying a heavy box up the stairs, you set the box on a step and rest. then you pick up the box and carry it to the top of the stairs. describe these actions in terms of balanced and unbalanced forces acting on the box.