A student wants to test the effects of type of exercise on heart rate. What is the dependent variable?Type of exercisetype of exercisetime of day exercise occurstime of day exercise occursheart rateheart rateamount of exercise

It depends on the surface of the levels. the rougher the surface, the greater is the frictional force. for rougher surfaces, you would need to exert greater force to move the object. the concept is that, you must overcome the frictional force in order to bring the object into motion. this is the reason why we add lubricants to the joints so they could easily move. this answer was on

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