In the above image of the pendulum, If the ball has a mass of 3 kg and is 2.5 m up in the air at point A and only 1.5 m in the air at point C, what is the change in GPE between point A and point C? (there is no friction in this physics land)

If the speed of a particle triples ,by what factor does its kinetic energy increase?

Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f