One-dimensional Gravitational motion

AI Thread Summary
To calculate the height from which a ball is released in one-dimensional gravitational motion, the time of fall and gravitational acceleration are essential. For a ball falling for 2.80 seconds, the height can be determined using the equation h = 0.5 * g * t², where g is the acceleration due to gravity. If the same ball were released from the same height on the moon, the time to hit the ground would differ due to the moon's lower gravitational acceleration. Users are encouraged to research free fall equations and concepts to better understand the calculations involved. Engaging with resources like Hyper Physics can provide valuable insights for beginners in physics.
nycjay222
Messages
6
Reaction score
0
A) It takes 2.80 s for a small ball with a mass of 0.040 kg released from rest from a tall building to reach the ground. Calculate the height from which the ball is released.

B)If that ball had been released from the same height, but this time above the surface of the moon, how long would it have taken for the ball to hit the ground?
 
Physics news on Phys.org
Hi nycjay222,
Welcome to PF.
How much you know about the free fall?
Can you find out the relevant equations for free fall?
 
i really don't know anything this is my first encounter with physics and my ta is behind and I haven't learned much to do these which is why I am so stranded !
 
Have you got any textbook?
Go to Hyper Physics site and collect the required information.
 
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 '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...

Similar threads

Back
Top