I can calculate Calculate the momentum of a 65 kg skateboarder momentum. moving forward at the rate of 3 m/s. P=mv = 65kg x 3m/s = 195 kgm/s Calculate the momentum of a 20 kg toddler in a car traveling west at the rate of 22 m/s. P=mv = 20 kg x 22 m/s = 440 m/s Superman is often shown throwing huge objects (such as a bus), while he stays completely still. Why does this not support Newton’s 3rd Law and Conservation of Momentum? Still is V=0m/s Law of conservation says all momentum is conserved so there has to be a reaction(mv) to the action(mv) and their isn’t. p=p mv= mv I can describe the State Newton’s 3rd Law. For every action there is an mathematical equal and opposite reaction. relationship of When a long jumper jumps, Earth exerts a force that Newton’s 3 moves him/ her upward and to the east. Since there is a Action/Reaction reaction force exerted on Earth, why doesn’t Earth move (momentum) p=mv. the same distance down and to the west? Earth is more massive. When a bowling ball hits the pins at the end of the bowling alley, what happens to the balls momentum? The momentum is transferred into the pins. I can describe What is Newton’s Law of Universal Gravitation? Newton’s law of F=G m1m2 Gravitation. d2 The force of gravity between two objects depends on what 2 factors? Mass and distance apart True or False… Gravity is the pull of an object towards the center of the Earth. If you went to the moon and dropped a feather and a hammer at the same time, which would land first? Neither, they would hit at the same time Why? Moon’s gravity is so much less, therefor less atmospheric pressure and less air resistance to cause friction between the objects. If you drop a bullet at the same time one is fired straight outward from the same height, which bullet will hit the ground first? Since they are dropped from the same gravitational Potential energy height, they hit at the same time. Why? All objects on Earth are attracted at the same acceleration rate of 9.8m/s2 I can predict the The force between a planet and a spacecraft is 1 gravitational force million Newton’s. If the spacecraft moves to half of its
I can calculate momentum. Calculate the momentum of a 65 kg skateboarder moving forward at the rate of 3 m/s. P=mv = 65kg x 3m/s = 195 kgm/s Calculate the momentum of a 20 kg toddler in a car traveling west at the rate of 22 m/s. P=mv = 20 kg x 22 m/s = 440 m/s Superman is often shown throwing huge objects (such as a bus), while he stays completely still. Why does this not support Newton’s 3rd Law and Conservation of Momentum? Still is V=0m/s Law of conservation says all momentum is conserved so there has to be a reaction(mv) to the action(mv) and their isn’t. p=p mv= mv I can describe the mathematical relationship of Newton’s 3 Action/Reaction (momentum) p=mv. State Newton’s 3rd Law. For every action there is an equal and opposite reaction. When a long jumper jumps, Earth exerts a force that moves him/ her upward and to the east. Since there is a reaction force exerted on Earth, why doesn’t Earth move the same distance down and to the west? Earth is more massive. When a bowling ball hits the pins at the end of the bowling alley, what happens to the balls momentum? The momentum is transferred into the pins. I can describe Newton’s law of Gravitation. What is Newton’s Law of Universal Gravitation? F=G m1m2 d2 The force of gravity between two objects depends on what 2 factors? Mass and distance apart True or False… Gravity is the pull of an object towards the center of the Earth. If you went to the moon and dropped a feather and a hammer at the same time, which would land first? Neither, they would hit at the same time Why? Moon’s gravity is so much less, therefor less atmospheric pressure and less air resistance to cause friction between the objects. If you drop a bullet at the same time one is fired straight outward from the same height, which bullet will hit the ground first? Since they are dropped from the same gravitational Potential energy height, they hit at the same time. Why? All objects on Earth are attracted at the same acceleration rate of 9.8m/s2 I can predict the gravitational force The force between a planet and a spacecraft is 1 million Newton’s. If the spacecraft moves to half of its