Problem 7.08 1 of 6 Constants An atomic nucleus at rest decays radioactively into an alpha particle and a different nucleus. Part A the speed of the alpha particle is 4.9x105 m/s ? Assume the recoiling What will be the speed of this recoiling nucleus nucleus has a mass 57 times greater than that of the alpha particle. Express your answer to two significant figures and include the appropriate units. ? Vnucleus = Value Units Submit Request Answer Provide Feedback Next >

Two toy cars are about to collide! B A Car A has a mass of 450 g and is travelling at 2.25 m s-1. Car B has a mass of 350 g and is travelling in the opposite direction at 2.75 ms-1. (Define left to be the positive x-direction.) Unless directed in this question, do not round your answers.

One billiard ball is shot east at 1.9 m/s. A second, identical billiard ball is shot west at 0.90 m/s. The balls have a glancing collision, not a head-on collision, deflecting the second ball by 90° and sending it north at 1.36 m/s. Part A What is the speed of the first ball after the collision? Express your answer to two significant figures and include the appropriate units. HÀ ? 1.96 V = S Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining

A ball of mass 0.512 kg moving east (+z direction) with a speed of 3.80 m/s collides head-on with a 0.256 kg ball at rest. Assume that the collision is perfectly elastic. Part A What is be the speed of the 0.512-kg ball after the collision? Express your answer to three significant figures and include the appropriate units. Submit Part B H Submit Part C E HA Value Oto the east Oto the west Request Answer. What is be the direction of the velocity of the 0.512-kg ball after the collision? Units Request Answer ? What is the speed of the 0 256-kg ball after the collision? Express your answer to three significant figures and include the appropriate units. 7