All Questions
Tagged with projectilehomework-and-exercises
565 questions
2votes
2answers
136views
Sign convention in air resistance velocity equation
If I try to solve this problem by starting with $ma = mkv - mg$ (since air resistance acts upwards and gravity acts downwards), a number of problems arise. When integrating and applying the initial ...
- 31
1vote
0answers
57views
Discrepancy in finding the maximum vertical height of a projectile when the range is given [closed]
This question is of relevance as it debates what the maximum height of a projectile should be when the range is given. The question in my textbook is: A cricketer can throw a ball to a maximum ...
- 11
1vote
0answers
34views
How to derive equation for spring constant in ballistic pendulum? [closed]
Given a ballistic pendulum like the one below that launches a ball at a pendulum using spring force, I need to derive an equation for the spring constant $k$. I find it intuitive to derive the ...
0votes
0answers
97views
What is the Flight Path Angle Derivative?
I have an assignment which involves a rocket flight path. The angle the rocket makes to the Earth is called the flight path angle and when the rocket is in a freefall parabolic curve, there is a time ...
29votes
9answers
2kviews
Effect of drag on projectile flight time - simple solution?
I saw a question like this in an AS-level physics paper (consisting of 40 questions given to ~17-year-olds, with a 75-minute time limit): Two identical balls, x and y, are thrown up from the earth's ...
- 299
1vote
2answers
112views
Problem with logic regarding projectile motion problems when only Range and Angle are given
Im struggling with understanding a problem with my logic in regards to solving problems relating to finding out an initial velocity when given a range $d$ and angle of elevation $\theta$. The main ...
0votes
1answer
54views
Regarding motion [closed]
I am conducting a thoughtful experiment involving a train that accelerates at 10 m/s^2 . The train has a long passage of 12 m, and I am standing in that passage. If I jump up straight and remain in ...
user437229
2votes
0answers
147views
Collision with a frictionless movable inclined plane [closed]
After deriving an expression for the distance travelled along a fixed incline plane by a particle on colliding with it when dropped vertically, out of my own interest, I was wondering whether an ...
1vote
0answers
51views
Draw the angle graphically [closed]
Hi everyone (sorry for the "unclear" title), I'm having trouble graphically representing the point of this: A stone is thrown from the top of a tower with $h = 50\text{m}$ and with a ...
- 111
0votes
1answer
61views
Issue with simplifying the equation related to non-uniform acceleration
I am exploring how the cross sectional area of a drogue chute affects its velocity after travelling a set distance. I got this equation: $$m_1 a = m_2 g - \frac12 c_d \rho A v^2,$$ This covers the ...
-1votes
2answers
58views
For an objective falling, reaching terminal velocity and then hitting the ground, how can I find the force it exerts on the ground? [closed]
For example object with v=tanh(0.1213)t/0.01236. m=69kg. I thought I had to use F=mv/t but that just gives the net force of the object while falling. I don't know how to find the force impacting on ...
0votes
0answers
67views
Rocket equation non-constant gravity
I am currently trying to teach myself differential equations and wondered about the following problem. You have an object (a rocket of constant mass $m_r$) and initial velocity $v_0$ that tries to ...
- 253
-1votes
1answer
45views
Components of velocity in projectile motion [closed]
I came across this question in my physics textbook (Gr12) and I was hoping someone could explain the solution to me A ball is thrown horizontally off a building at $8.2\,\text{m}/\text{s}$. At a ...
0votes
2answers
48views
Question regarding projecticle in freefall disregarding air resistance [closed]
This question is regarding the following problem A stone is thrown up from the top of a tower 20 m with a velocity of 24 m/s at an elevation of $30^\circ$ above the horizontal. Find the horizontal ...
- 183
0votes
1answer
75views
Terminal velocity gravity against first-order drag force
Let's say that we have a falling object with two forces acting on the object: gravity $F_g = mg$ and a first order drag force $F_d = kv$. Terminal velocity will be reached when gravity is equal to the ...
- 879
