Projectile Motion Calculations for a Shell Fired at 30 Degrees

AI Thread Summary
A shell is fired at a 30-degree angle and remains airborne for 40 seconds, prompting calculations for its range and maximum height. To find the horizontal distance it lands from the original position, the projectile motion equations can be applied, specifically focusing on time of flight and initial velocity components. The highest point can be determined using the vertical motion equations, factoring in gravitational acceleration. Clarification is sought on whether the 40 seconds refers to time or velocity, indicating confusion about the problem's parameters. Understanding the correct application of projectile motion equations is essential for solving the problem accurately.
mc2_phy
Messages
12
Reaction score
0

Homework Statement



A shell is fired at an abgle of 30 degrees to the horizontal. If the shell stays in the air for 40 seconds, calculate
a)how far it lands from it's original position
b)the highest point it can reach

Homework Equations



N/a

The Attempt at a Solution


I was unparticularly sure because the q says 40 seonds- should it be 40m/s
 
Physics news on Phys.org
Is

v = v_{0} +gt

a familiar equation?
 
Use your linear motion equations.

v = u+gt
s = ut + 0.5gt^2
and v^2 = u^2+2gs

make an inventory of what parameter values you have and see which equation suits it best...
 
No not really. Just wondering how you solve this.
 
thank you.
 

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Similar threads

Unbalanced force to find altitude of airplane
Replies
4
Views
2K
How Do You Solve a Projectile Motion Problem?
Replies
3
Views
4K
Firing mortar and cliff edge, Feynman Lectures 4.17
Replies
4
Views
2K
What Is the Optimal Firing Angle for Maximum Range When a Car Moves at 20 m/s?
Replies
40
Views
7K
Projectile motion above ground given only angle and height
Replies
3
Views
2K
Artillery projectile motion problem
Replies
1
Views
2K
What Are the Optimal Launch Angles for a Projectile to Pass Through an Opening?
Replies
25
Views
3K
Projectiles and Newtons law help?
Replies
1
Views
1K
Projectile Problem: Solving an Artillery Shell Problem
Replies
3
Views
2K
What Is the Initial Speed of a Projectile Fired from a Cliff?
Replies
6
Views
3K

Hot Threads

Recent Insights

Back
Top