ered are followed by a a ppendix B. his chapter may be assigned online at WebAss
ID: 1773434 • Letter: E
Question
ered are followed by a a ppendix B. his chapter may be assigned online at WebAssign. A sports car with a mass of 1200 kilograms travels down the road with a speed of 20 meters per second. Why can't we say that its momentum is smaller than its kinetic energy? 4. 5 If a system has zero kinetic energy, does it necessarily have zero momentum? Give an example to illustrate your answer. 6. Ir a system has zero momentum, does it necesarily have zero kinetic energy? Give an example to illustrate your answer. (7) Which has the greater kinetic energy, a supertanker berthed at a pier or a motorboat pulling a water skier? Why? Two pickup trucks with the same mass are driving on the freeway. If the Chevy has twice the speed of the Ford, does the Chevy have twice as much kinetic energy as the Ford? Explain your answer Assume that a minivan has a mass of 2000 kilograms and a sports car has a mass of 1000 kilograms. If both vehicles are 8. 9.Explanation / Answer
(5) Yes, It is possible.
It is known that the Kinetic energy is scalar and momentum is vector.
Consider two bodies of eqaul masses, moving with same spead in exactly opposite direction. According to law of conservation of momentum, the toal momentum of the system is Zero (since the mometum is a vector quantity). But as energy is scalar, the energy of the combination of two bodies is not equal to zero.
So, in this case, total momentum is zero, but exists non-zero kinetic energy.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.