Finding initial velocity of a projectile

AI Thread Summary
To find the initial velocity of a projectile, the football's motion can be analyzed in the horizontal and vertical components. The initial velocity in the x-direction is calculated using V0X = V0cos60, while the y-direction uses V0Y = V0sin60. This separation of components is essential for solving projectile motion problems. The next steps involve applying kinematic equations to relate these components to the distance "R" traveled. Overall, the approach of breaking down the velocity into its components is a solid method for solving the problem.
cresta123
Messages
1
Reaction score
0

Homework Statement


A football is kicked at an angle of 60 degrees to the horizontal and travels a distance "R" before hitting the ground

A.) find the initial speed of the football

Homework Equations

The Attempt at a Solution

: [/B]
I would presume I would need to find initial velocity of X and Y separately and then find the magnitude the V the formulas should be V0X=V0cos60 and V0Y=V0sin60
and I need to find V0 of both x and y I just want to know if I'm on the right track I'm quite new to physics
 
Physics news on Phys.org
Welcome to PF!

Your approach sounds reasonable.
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'Collision of a bullet on a rod-string system: query'
In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top