A projectile has an initial velocity of 110 m/s and a launch angle of 40o from the horizontal. The surrounding terrain is level, and air friction is to be disregarded. What is the maximum elevation achieved by the projectile?

255.09 m

Explanation:

Using

H = U²sin²θ/2g Equation 1

Where H = maximum elevation, U = initial velocity, θ = Angle of projectile, g = acceleration due to gravity.

Given: U = 110 m/s, θ = 40°, g = 9.8 m/s².

Substitute into equation 1,

H = 110²sin²40/(2×9.8)

H = 12100(sin²40)/(19.6)

H = 12100(0.4132)/19.6

H = 255.09 m.

Hence the maximum elevation achieved by the projectile = 255.09 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.