A student throws a ball horizontally at the rate of 40 m/s. If the height from which the ball is thrown is 2 m, how far will the ball travel before it touches the ground? 16.33 m 16.33 m 25.56 m 25.56 m 28.29 m 28.29 m 19.54 m

25.56 m

Explanation:

For vertical movement , initial velocity u = 0

Displacement  h = 2 m

time taken = t

h = ut + 1/2 gt²

2 = .5 x 9.8 x t²

t² = .4081

t = .639 s

During this period , the ball will move in horizontal direction uniformly with velocity 40 m /s .

horizontal displacement = horizontal velocity x time

= 40 x .639 = 25.56 m

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.

the answer is false

explanation: