An object of mass 13kg is falling in air and experiences a force due to air resistance of 9n. determine the magnitude of net force acting on the object.

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.

Give an example in which the electrical energy changes to light energy

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction. true or false?