What momentum of a 50kilogram ice skater gliding across the ice at a speed of 5m/s?

Momentum (P) = Mass (kg) * Velocity (m/s)

P = M * V

P = 50 * 5

P = 250

So momentum is 250 kgm/s

Explanation:

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19

d. platinum would have the greatest temperature increase because it has the lowest specific heat.