Projectile Motion football pass

[DJey]

Homework Statement

Just started this course, please bare with me, I am not sure what to do, blanked out

Question: A football quarterback attempts a pass to one of the receivers. As the ball is snapped, the receiver leaves the line of scrimmage and runs directly down the field. the quarterback releases the ball 2.0s later and from a position 3.0m behind the line of scrimmage. he throws the ball at a speed of 26m/s at and elevation of 60 degrees above the horizontal. The receiver makes a diving reception, catching the ball just as it reaches the ground.
a) What is the time of flight of the football?
b)what is the average speed of the receiver ?

Homework Equations

The Attempt at a Solution

 

[tiny-tim]

Welcome to PF!

Hi DJey! Welcome to PF!

… please bare with me …

uhh? it's not that sort of forum!

Question: A football quarterback attempts a pass to one of the receivers. As the ball is snapped, the receiver leaves the line of scrimmage and runs directly down the field. the quarterback releases the ball 2.0s later and from a position 3.0m behind the line of scrimmage. he throws the ball at a speed of 26m/s at and elevation of 60 degrees above the horizontal. The receiver makes a diving reception, catching the ball just as it reaches the ground.
a) What is the time of flight of the football?
b)what is the average speed of the receiver ?

Use the standard constant acceleration equations …

show us what you get ​

 

[DJey]

thanks a lot,
i know when i said please bare with me i really meant guide me through,

 

[johnsonc007]

You need to find out the time elapsed from the time the ball was thrown until it landed. Using the projectile formula for y, one can solve for t for the time it left until it landed.

y=(Vi)sin(angle)t-1/2gt^2