A student, standing on the roof of a 30.0m talldorm building releases from rest a 200-grams apple to the ground. Another student in her bedroom, sees the apple past her window and notices that the apple strikes the ground after 0.600 s. a)What is the total time of flight of the apple (from the time it was released, until it hits the ground)? b)What is the speed of the apple just before it hits the ground? c)What is the heightofthe student’s window?

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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?”