Projectile's horizontal range on level ground is r=v20sin2θ/g. at what launch angle or angles will the projectile land at half of its maximum possible range. enter your answers numerically separated by commas. express your answer using two significant figures.

Explanation:

As we know that the formula of range is given as

now we know that

maximum value of the range of the projectile is given as

now we need to find such angles for which the range is half the maximum value

so we will have

potential energy is directly proportional to height.

more height = more potential energy.

greatest increase in height = greatest increase in potential energy

where are the points with the greatest increase in height ?

has to be c-e or d-e .

newton's first law of motion