4 A string is tied on a spring. Two students then stretch out the spring, as shown below.
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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.

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false