3. [Caution, Tricky!!] За: Explain Logically (using words) why conservation of momentum must be a consequence of Newton's 3rd law. 3b: Show that Newton's 2nd law can be rewritten in terms of momentum like so; dp dt (i.e., show that this expression is equivalent to F = må.) Using algebra and calculus and the form of Newton's 2nd law given in part b, demonstrate that conservation of momentum is a direct 3c: consequence of Newton's 3rd Law.

4. A moving freight train takes a long distance to stop because of its A. velocity B. mass C. momentum D. force 5. Momentum of a car can be decreased by to A. decreasing its speed B increasing its speed C. increasing its mass D. decreasing its braking force 6. Calculate the momentum of a 2000-kg truck travelling 19 m/s. Show your work. to Return to page 58 of the Student Module Booklet and begin Lesson 2. For questions 7 to 9, read each question carefully. Decide which of the choices BES completes the statement. Place your answer in the blank space given. A 7. A unit for impulse is A. kg.ms B. kg.m/s C. kg-s/m D. kg.m/s? 8. If you have double the force and half the time over which the force a the resulting impulse A. is halved B. doubles C. remains the same D. increases four times (2)

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Hide Transcribed Text Q5: Fireworks tend to look fairly symmetric. But not always! This is a feat of modern engineering! Using the ideas of Conservation of Momentum, A) explain why most fireworks are very symmetric, and B) speculate using your understanding of momentum about how designers might be able to create asymmetric patterns (what might they have to adjust to make the inner eyes and smile seen below?)