QUESTION 1: An object of weight 40 N is sliding on a table. The force of friction between the table and the object is equal to 4 times its speed numerically and an external force of 12 N acts on the object, If x=0 and v=0 at t=0., a) Obtain clearly the differental equation for this motion b) Find an expression for the speed of the object as a function of time t c) Find an expression for the position of the object at ant timne t. (Take g=10 m/s²)

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”