Two bodies have the same kinetic energy K1 = K2 but m1 = 9m2. What is the relationship between momentum (P)  1.P1 =6 P2  2.P1 =(1/9) P2  3.P1=P2  4.P1 =3 P2  5.P1 = (1/6 ) P2  6.P1= 9 P2  7.P1 = ( 1/3) P2  8.P1= 2 P2

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If the momentum of an object is trippled, its kinetic energy will change by what factor?   I think it changes 9 times? not sure.

A radioactive nucleus at rest decays into a second nucleus, an electron, and a neutrino. The electron and neutrino are emitted at right angles and have momenta of Pe=9.67x10-23 kg. m/s and p = 5.99×10-23 kg. m/s. respectively. (Figure 1) Figure Pnuc nuc +y 0 Onuc Py Pe 1 of 1 +X Part A Determine the magnitude of the momentum of the second (recoiling) nucleus. Express your answer to three significant figures and include the appropriate units. Pnuc= Submit Part B Onuc = Submit μA 4 Provide Feedback Value Request Answer Determine the angle between the momentum of the electron and the momentum of the second (rec Express your answer using three significant figures. [VE| ΑΣΦ 1 → C Request Answer Units 1 ? ?

4. A 1590-kilogram truck moving with a speed of 23.0 m/s runs into the rear end of a 1090-kilogram stationary car. If the collision is completely inelastic, how much kinetic energy is lost in the collision? sf6 60 ssfot sf60

云 HI 5 F. %24 -10 Part A Jeanette is playing in a 9-ball pool tournament. She will win if she sinks the 9-ball from the final rack, so she needs to line up her shot precisely. Both the cue ball and the 9-ball have mass m, and the cue ball is hit at an initial speed of v. Jeanette carefully hits the cue ball into the 9-ball off center, so that when the balls collide, they move away from each other at the same angle 0 from the direction in which the cue ball was originally traveling (see figure). Furthermore, after the collision, the cue ball moves away at speed vf, while the 9-ball moves at speed vp. (Figure 1) Find the angle 0 that the 9-ball travels away from the horizontal, as shown in the figure. Express your answer in degrees to three significant figures. > View Available Hint(s) For the purposes of this problem, assume that the collision is perfectly elastic, neglect friction, and ignore the spinning of the balls. Submit Provide Feedback Figure 1 of 1 MacBook Air 08 F3 O00 000 F2…

A P 100% BIUA Normal text Arial 12 三 1 2 |. 3 I 4 1. A 0.40kg football is kicked at a velocity of 11m/s. What is the momentum of the ball?-1.20 kg.m/s 2. A student dresses up as sumo for halloween and jumps towards his friend with a velocity of 2.3m/s and a momentum of 506kgm/s. What was the student's mass? 3. The sumo student from problem 2 collides with his friend. Upon colliding he accelerated his friend 8m/ s?. If the collision lasts 1.2s, what was the impulse of the collision? 4. A 0.43kg pumpin is smashed by a zombie student's foot that had a momentum of 432kgm/s. What was the speed of his kick? 5. Calculate the time it took for Frankenstien to punch through a wall with a force of 8,023N resulting in an impulse of 593NS.

There are two cars, A and B, that have initial momentum (26 kg.m/s) and (-11 kg.m/s), respectively. The final momentum of car A is (4 kg.m/s). The final momentum of car B (after collision) (in kg.m/s) is B. 11 .a 6. .b o 7 .C O 4 .d o 9. .e O

Joey has a mass of 50 kg and he is standing at rest on the friction-less ice. His partner tosses him a ball with a mass of 10 kg and a speed of 6 m/s. Joey catches the ball firmly and he slides backward  on the ice with a speed of Which below? 4 m/s 1 m/s 6 m/s

Ball B Ball A а. 1.75 m/s b. 1.9 m/s 3.5 m/s 3.35 m/s с. 3.06 m/s 2.19 m/s d. 3.00 m/s 2.25 m/s e. 2.95 m/s 2.29 m/s Two billiard balls of equal mass undergo a perfectly elastic head-on collision. If the speed of Bali A is initially 3.50 m/s, and that of Ball B is 1.75 m/s, theft speeds after the collision will be * a