The missile was fired at 45 ° alpha angle from a slope with a height of ℎ = 6 m. The missile falls below the slope at a distance of l = 18 m from the place of launch. Disregarding air resistance, determine the value of the initial velocity.

explanation:

as the height from which the ruler was dropped increased, the speed of the ruler at ryan's hand increased.

i think they are all correct

explanation:

they seem good

he made 11 calls in one day

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.