(2] A woman was transporting an open box of cupcakes to a school party. The car
ID: 1580285 • Letter: #
Question
(2] A woman was transporting an open box of cupcakes to a school party. The car in front of her stopped suddenly; she applied her brakes immediately. She was wearing her seat belt and suffered no physical harm, but the cupcakes flew into the dashboard and became "smushcakes." Explain what happened. [3] Why can we neglect forces such as those holding a body together when we apply Newton's second law? [4] A rock is thrown straight up. At the top of the trajectory, the velocity momentarily is zero. Does this imply that the force acting on the object is zero? Explain your answer. [5] What is the relationship between weight and mass? Which is an intrinsic, unchanging property of a body?Explanation / Answer
2) Due to sudden apply of break, cup cakes were hit on dash board due to its Inertia, cause you may be retained at your seat by seat belt but there were nothing to retain cups hence the remain in motion till collide with dashboard.
3) those are internal forces, sum total of all those forces will be zero.
4) No, Gravity force is associated with mass only, it has nothing to do with velocity of an object.
5) Weight is a force one experiance in a gravity field due to its intrinsic mass. you can understand like your weight will be different at moon and earth but your mass will remain the same.
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