A homework question that i with

[crazy_life]

hi, i was trying to figure out how to tackle this physics question, but I am a little stuck. the question is:

a tennis player, playing for a match hits a ball 2m above the groung. the ball leaves his racquet with a speed of 20m/s at an angel of 5 above the horizontal. the horizontal distance to the net is 7m and the net heigh is 1m does the ball clear the net?

i've diagram to help me and I am just stuck about where to start. thanks for helping me.

 

[neutrino]

How long does it take the ball to reach the net, i.e., traverse the distance of 7m?

What is it's height at the time?

 

[m2003]

Hi there,

First of all, it's great that you have a diagram to help you visualize the problem. That can be a very useful tool in tackling physics questions. Let's break down the problem step by step.

1. Start by identifying all the given information in the problem. In this case, we know that the tennis player hits the ball 2m above the ground, with a speed of 20m/s at an angle of 5 degrees above the horizontal. We also know that the horizontal distance to the net is 7m and the net height is 1m.

2. Next, we need to determine what we are trying to solve for. In this case, we want to know if the ball clears the net, so we need to find the height of the ball when it reaches the net.

3. Now, we can use the given information to set up our equations. We can use the kinematic equations for motion in two dimensions to solve for the height of the ball at the net. Remember that in this case, we are dealing with projectile motion, so the equations we use will be slightly different than for linear motion.

4. Plug in the values for the initial velocity, angle, and horizontal distance into the appropriate equations. You may need to use trigonometric functions to solve for the vertical and horizontal components of the initial velocity.

5. Once you have solved for the height of the ball at the net, compare it to the height of the net. If the height of the ball is greater than the height of the net, then the ball clears the net. If the height of the ball is less than the height of the net, then the ball does not clear the net.

I hope this helps guide you in solving the problem. Keep in mind, it's always a good idea to double check your calculations and make sure your units are consistent. Good luck!