Ch3_3 #4

You should never attempt a projectile motion problem without having the 5 equations on the bottom half of Sheet 27 in front of you. I strongly recommend to make a sketch as on Sheet 21 in Ch3 and enter all given quantities from the problem here into it. This should include your knowledge of the y-component of the velocity at the top of the trajectory. It will be helpful to replace the green vector close to the end of the trajectory by a line representing the net.
Part A:
How do you judge whether the ball clears the net ? Think in terms of the y-component of the ball position at the location of the net. Can you calculate its value ?
(Hint: get the flight time first from the x-equations after you have identified all the given quantities for the horizontal motion. Then use it to calculate the vertical position of the ball at the net.)