Two skaters, both of mass 75 kg, are on skates on a frictionless ice pond. one skater throws a 0.3-kg ball at 5 m/s to his friend, who catches it and throws it back at 5 m/s. when the first skater has caught the returned ball, what is the velocity of each of the two skaters?

To solve this problem it is necessary to apply the concepts related to the momentum. The moment can be basically defined as the product of the mass and velocity of an object. Mathematically it is expressed as

Where,

m = mass

V = Velocity

From the statement it is noted that there is a conservation of Momentum but given in different directions, to which we could affirm that there is the momentum of throw and momentum of return

Our values are given as

Under the values given the moment with respect to the ball - and which is subsequently transmitted to people - it would be given by

If the moment is conserved the speed of each of the Skaters would be:

Therefore the velocity of each of the two skaters is 0.04m/s moving apart.

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.