A ball is thrown with a velocity of 40 m/s at an angle of 30° above the horizontal and attains a certain range R. At what other angle will this ball attain the same range keeping its initial velocity the same?

This ball will attain the same range at 60°.

Explanation:

Projectile motion: when an object is thrown in such a way that it form an angle with horizon, the force act on it that is the acceleration due gravity. This type of motion is known as projectile motion.

Range: The horizontal distance is covered by an object.

Range

u = initial velocity = 40 m/s

θ = 30°

g = gravity =9.8 m/s²

Next,

Range and u = 40 m/s

This ball will attain the same range at 60°.

the part of the wave he is travelling on is the crest

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this