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Equation 3 which should be applied vertically contains u = initial velocity Equation 4 which should be applied horizontally contains v = final velocity How can I determine u which is the initial velocity in equation 4 that does not contain u (initial velocity). Thanks in advance!

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I don't understand how I shall deal with the vertical analysis and the horizontal analysis and how to use equation (3) and (4) to determine the initial velocity. Please help! Thanks in advance!

So how do I really find the initial velocity with regards to equation 3 and 4. I really do want to understand this problem and solve it. Sorry if I'm asking too much, I got a bit confused.

I really do not understand what you mean, the equations are: Equation three is the vertical on while equation four is the horizontal one, u= initial velocity v= final velocity If I'm throwing something horizontally, how do I determine the initial velocity. Equation four states...

Is a=g in equation 3? And how do I simultaneously determine t? Is it a simultaneous equation? Equation 4 which is the horizontal analysis does not contain u which is the initial velocity, how do I determine the initial velocity then?

You said that I know u which is the initial velocity, that is the component I'm looking for.

How about equation 5? The acceleration is local acceleration of gravity g. At this point one must remember that while these quantities appear to be scalars, the direction of displacement, speed and acceleration is important. They could in fact be considered as uni-directional vectors. Choosing...

Hi, thanks for the reply, these are the equations of motion: How do I know which one to use and how to I motivate my answer? u = initial velocity V= final velocity Thanks in advance!

Hi I need some help with this question: Estimate the maximum initial velocity you can achieve with a tennis ball I thought of using the maximum range formula: R=v2/g but doesn't that imply to the fact that I'm throwing at an angle of 45 degrees? Please help me, I really want to solve this...

What is the vertical motion formulae?

Why do you think this question s classified as hard? Might it be that one should make assumptions? Or what do you think?

What do you mean by "you"? (Does your answer involve the maximum initial velocity?)

Is it really that simple? Doesn't it have to do with some trigonometric functions?

The question I want to solve is: Estimate the maximum "initial velocity" that you can achieve with a regular tennis ball. It is classified as a hard question which got me thinking... I think that assumptions are a key role here, at the same time I have seen many other equations on how...