Calculating Power and Range of a Bullet

AI Thread Summary
To calculate the average power delivered to a bullet with a mass of 0.0190 kg and an initial kinetic energy of 1008 J, the average power can be estimated using the formula P = dW/dt, where dW is the work done and dt is the time taken. The user has calculated the final velocity to be 326 m/s but is struggling to determine the force required for this calculation. Additionally, they seek clarification on how to find the maximum height of the projectile without knowing the launch angle, as well as the correct formula for average power. The discussion highlights the need for assistance in applying the relevant physics equations effectively.
daivinhtran
Messages
68
Reaction score
0

Homework Statement


The initial kinetic energy imparted to a 0.0190 kg bullet is 1008 J.
(a) Assuming it accelerated down a 1.00 m long rifle barrel, estimate the average power delivered to it during the firing.


(b) Neglecting air resistance, find the range of this projectile when it is fired at an angle such that the range equals the maximum height attained.
km

Homework Equations


KE = (mv^2)/2
P = dW/dt or Fv

The Attempt at a Solution


I found the final velocity which is 326
BUt I can't find the force.

How can I find the maximum height without knowing the angle
 
Physics news on Phys.org
And what's actually the formula for average power.
I doubt P = Fv is right
 
Can anyone help me ? :(

Thank you...
 

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...
View full post »
Thread 'Collision of a bullet on a rod-string system: query'

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...
View full post »
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...
View full post »

Similar threads

Finding range and height of bullets when given velocity
Replies
2
Views
4K
Bullet Range Neglecting Air Drag
Replies
8
Views
2K
Firing a bullet into a bock suspended by a string Help
Replies
10
Views
3K
How Do You Calculate Bullet Trajectory in Projectile Motion?
Replies
3
Views
3K
Ballistic bullet pendulum conservation of momentum problem
Replies
1
Views
2K
Mechanics: Calculating the minimum height for a bullet to launch from to hit a target
Replies
3
Views
3K
Calculating Power in a Force Problem with Changing Angle and Time
Replies
6
Views
2K
Projectile Motion: Calculating Range, Maximum Height, Speed & Angle
Replies
4
Views
3K
Projectile motion maximum range problem
Replies
10
Views
3K
Estimating Maximum Ranges of Ammunition for Tabletop War Games
Replies
2
Views
4K

Hot Threads

Recent Insights

Back
Top