What is the momentum of a 55kg god moving at 7m/s ?

How much fuel (in kg) would be needed for a 1,200-kg rocket (its mass with no fuel) to take off from Earth and reach 1,800 m/s in 20s? The exhaust speed is 1,000 m/s. 5630 7630 3630 4630

2. A person claims that they are able to throw a 0.145-kg baseball with as much momentum as a 3.00-g bullet moving with a speed of 1.50 x 10³-m/s. (a) What speed must the baseball have for this to be true? (b) Calculate the kinetic energy of the baseball and the bullet at these speeds, stating which is greater. Answers: (a) 31.0 m/s (b) 69.7 J, 3.38 x 10³ J

A 120 kg man is standing in the middle of a skating rink holding a 2kg ball. He suddenly throws the ball eastward at 5 m/s. What is the magnitude of his momentum afterward? Assuming frictonless between his skateboots and the ice.

Our brave astronaut Ms. Rose Noneck is at rest spacewalking 9.3 m away from her spaceship when her jetpack runs out of electricity (powered by TCC?). And worst – she is down to 60 seconds of oxygen left – there's plenty in her spaceship as well as her delicious lunch of baba ganoush. She remembers Prof. P's class and throws her 23.6 kg jetpack in the opposite direction of her spaceship at 1.4 m/s. Her mass is 55 kg. Will she make it back to her spaceship before she runs out of air? Convince me with numbers - tell me how long in seconds it takes for her to get back. Will we be seeing her in Exam 4? Or is it the end for her?

Betty (mass 40 kg) stands in an ice rink as Bubbles (her puppy, mass 12 kg) runs towards her and leaps into her arms. If they move off together with a speed of 0.80 m/s, how fast (in m/s) was Bubbles moving when Betty caught her?

What is the momentum of a 10Kg object that slides at 12m/s across an icy lake?.

Suppose a pitcher throws a ball of 0.15kg with a momentum that equals that of a 2g bullet with a speed of 1800m/s. What is the speed of the ball in km/h?

There is a large crater in Arizona called Meteor Crater. It is estimated that it was formed about 20,000 years ago by a meteorite that had a mass of about 5 x 10^10 kg and was traveling at a speed of 7.5 km/sec. How fast could this meteorite have hit the Earth (whose mass is 6 x 10^24 kg) if we assume a head-on collision?

A ball is thrown at an astronaut in deep space, and strikes the astronaut at vm/s. What is the difference between the amount of momentum the astronaut would acquire from catching the ball, and the amount that he would acquire if he lets it rebound off of him at a velocity of -v?