Aprojectile is fired from the origin of the coordinate system with an initial velocity v0 in a direction making an angle α with the horizontal. calculate the time required for the projectile to cross a line passing through the origin and making an angle β < α with the horizontal.

Explanation:

Given

launching inclination is

suppose u is the initial velocity

vertical velocity

horizontal velocity

Vertical distance traveled by Projectile is

Now equation of line passing through origin

Equating two equation we get

putting

with the invention of the automobile, the woman of the house could drive to the store and get groceries. women were also free to socialize more. during world war ii women were allowed to work in factories to the war effort and could drive to work or ride mass transit buses to their jobs.

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.