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- Betty (mass 35 kg) stands on an ice rink as Bubbles (her hyperactive puppy, mass 8.6 kg)) runs towards her and leaps into her arms. If they move off together with a speed of 0.76 m/s, how fast (in m/s) was Bubbles moving when Betty caught her?An 100.0 kg astronaut in space is holding a 1.0 kg hammer. He throws the hammer with a velocity of 2.0 m/a. What is the momentum of the hammer and astronaut before he throws the hammer? what is the velocity of the astronaut after he throws the hammer?what momentum does a car of mass 1,762 kg have if its traveling at 11.3 m/s? answer in exponential form.
- At what speed do a bicycle and its rider, with a combined mass of 100 kg , have the same momentum as a 1800 kg car traveling at 5.6 m/s ?A 38.4 kg kid is sledding down a hill at 6.3 m/s. What is his momentum?A 2210 kg car experiences an impulse of 20,000.0 N · s during a collision with a wall. If the collision takes 0.43 s, what was the velocity of the car just before the collision? 27 m/s 18 m/s 9 m/s 10 m/s 12 m/s
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- A pigeon flying through the air has a momentum of 8.5 kg*m/s. if the mass of the pigeon is 0.51, what is its velocity?A boy on a bicycle has a linear momentum of magnitude P = 569 kg⋅m/s. The boy and the bicycle together have a combined mass of m = 103 kg.Write an expression for the boy's speed, v, in terms of the variables given in the problem statement. What is the speed, v, in meters per second? How much kinetic energy do the bike and rider together have, in joules?A 3.7-kg model rocket is launched, shooting 58.6 g of burned fuel from its exhaust at an average speed of 604 m/s. What is the speed of the rocket after the fuel has burned (ignore gravity and air resistance). Answer: + m/s