How to Solve Projectile Motion Problems: Finding Distance to Target

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To solve projectile motion problems, it is essential to apply the principles of physics, including initial velocity and time of flight. In the first question, the bullet's horizontal distance and the effects of gravity must be considered to determine where it strikes the target. The second question involves calculating the maximum height of a baseball and the height of a fence based on the time it takes to reach these points. Participants are reminded to show their work for better assistance, adhering to forum rules. Understanding these concepts is crucial for accurately solving projectile motion problems.
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Question 1: A rifle is aimed horizontally at the center of a large target 60 m away. The initial speed of the bullet is 240 m/s. What is the distance from the center of the target to the point where the bullet strikes the target?
 
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Question 2 A baseball is hit at ground level. The ball is observed to reach its maximum height above ground level 3.0 s after begin hit. And 2.5 s after reaching this maximum height, the ball is observed to barely clear a fence that is 320 ft from where it was hit. How high is the fence
 
Thread moved to Intro Physics homework forum. rasikan, you must show your own work on these problems before we can help you. That's an important rule here on the PF.
 

Thread 'Errors and significant figures'

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...
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Thread 'A cylinder connected to a hanging mass'

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...
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