Two football players have the same momentum. One player with a mass of 100 kg is moving at a velocity of 4 m/s. If the second player is moving with a speed of 5.5 m/s, what must his mass be

The mass of the second player is 72.73 kg

Explanation:

Given;

mass of the first player, m₁ = 100 kg

velocity of the first player, u₁ = 4 m/s

velocity of the second player, u₂ = 5.5 m/s

let the mass of the second player = m₂

Since they have equal momentum, the mass of the second player will be obtained by equating their momentum.

m₁u₂ = m₂u₂

100 x 4 = 5.5m₂

400 = 5.5m₂

m₂ = 400 / 5.5

m₂ = 72.73 kg

Therefore, the mass of the second player is 72.73 kg

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.