An airbus a380 airliner can takeoff when its speed reaches 80 m/s. suppose its engines together can produce an acceleration of 3 m/s. (a) how long does it take the plane to accelerate from 0 m/s to 80 m/s? (b) what is the distance traveled during this period?

(a). The time is 26.67 sec.

(b). The distance traveled during this period is 1066.9 m.

Explanation:

Given that,

Speed = 80 m/s

Acceleration = 3 m/s

Initial velocity = 0

(a). We need to calculate the time

Using equation of motion

Put the value into the formula

The time is 26.67 sec.

(b). We need to calculate the distance traveled during this period

Using equation of motion

The distance traveled during this period is 1066.9 m.

Hence, This is the required solution.

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.