4. A snowball is thrown with a speed of 42.0 km/h, giving it momentum with a magnitude of 2.00 Ns. The mass of the snowball, in grams, is Answer to 3 significant digits. g. (Record your answer in the numerical-response section below.) Your answer:
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- A0.02-kg bullet is fired into a stationary block of wood af mass of 4,76 kg. The relative speed of the bullet with respect to the wood is zero after collision (The bullet becomes embedded in the block of wood). What is the speed of the bullet-plus-wood cambination immediately after collision it the speed of the bullet before collision is 467 m/s? Express your answer in two decimal places and with units of m/s.32)A2 kg object moving at 3 m/s collides with a 4 kg object that is stationary. If the collision is perfectly inelastic, what is the speed of the 2 kg object after the collision? and how much is KE lost?
- The following question concerns a collision in outer space, far enough from any planets so that the external forces can be considered as negligible. An unmanned spacecraft, having mass 1,500,000 kg and speed 25,000 km/hr collides with a small meteor, having mass 3,000 kg and speed 2,100 km/hr, in the Kuiper belt. a. Prior to the collision, what are the total kinetic energy and total momentum? b. Assuming a head-on collision, in which the meteor becomes lodged into the spacecraft’s body and the two objects move off together, what are the total kinetic energy and momentum after the collision? c. If instead of getting lodged into the spacecraft, the meteor bounced off, would the change in the space craft’s momentum be larger or smaller, or is there not enough information to tell? Explain.The train car on the left with mass m1 is moving with speed V1i=24.0 m/s when it collides with a stationary car with mass m2. The two stick together and move with velocity V.a. Write initial momentum of the system by using symbols only?b. Write final momentum of the system by using symbols only? c. Use momentum conservation and solve for unknown v by using symbols? d. Calculate V if m1=m2?e. Show that the collision is inelastic?A. В. C. D. 3 kg 3 kg v= 5 m/s 3 kg 3 kg v = 0 m/s v= 2 m/s Above shows an object at different positions. v=-4 m/s Calculate the object's momentum at position A. Round to the nearest whole number. DO NOT include units Point a [A]
- As shown on the right two identical objects have the same mass. They are moving with the same speed but one is going due North and the other is going due East. Which of the following statements is completely correct? North a. East m m V Select one: They both have the same kinetic energies and the same momentum. b. They have different kinetic energies and they have different momentum. OC. They have the same kinetic energies, but they have different momentum. Od. They have different kinetic energies, but they have the same momentum.microblology textb. PHY166_onlıne Jab. Pinterest Word sdev E Reading li Constants An atomic nucleus at rest decays radioactively into an alpha particle and a different nucleus. Part A What will be the speed of this recoiling nucleus if the speed of the alpha particle is 2.2x105 m/s ? Assume the recoiling 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. HÁ Vnucleus = Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Provide Feedback Next > P Pearson Copyright © 2021 Pearson Education Inc. All rights reserved. I Terms of Use | Privacy Policy | Permisstons | Contact Us | V0 3:44 acerA 1100 kg car travelling south at 8 m/s collides with a 1300 kg car travelling as 10 m/s [N] during an exciting demolition derby. a) If they become coupled together in the collision, what is their velocity immediately after impact? b) After the collision, they slide for 10m before coming to a stop. How much time did it take them to stop?
- A railroad freight car of mass 2.84 x 10ª kg collides with a stationary caboose car. They couple together, and 36.0% of the initial kinetic energy is transferred to thermal energy, sound, vibrations, and so on. Find the mass of the caboose. Number i Units5. Consider the two-dimensional collision between two objects, A and B, shown in the picture below. Before A VA B After A B MB=0.8 kg VA=5 m/s VB=0 m/s VAf = 3 m/s VAF eA B VBF MA=0.6 kg a.) Use the momentum principle to find 0B and VBF. b.) Is this collision elastic or inelastic? Verify your answer by computing AE sys- 0A=30°