Find out the distance between your house and any other place(supermarket, school, friends’home) first day walk and visit it and find time taken to cover the distance. Next day use bicycle/car and do same and find the difference in time. Write the calculations.​

Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.