1. Chemist116

    How to obtain the distance covered by a projectile if an additional acceleration is t

    The problem is as follows: A projectile is fired from a horizontal ground with a speed of $\vec{v}=10\hat{i}+40\hat{j}\,\frac{m}{s}$. Due to gravity and the wind, the shell experiences a constant acceleration of $\vec{a}=-5\left(\hat{i}+2\hat{j}\right)\frac{m}{s^{2}}$. Find in meters at what...
  2. E

    Projectile motion problem

    A man is standing on a railway car which moves at a constant velocity of 5m/s he releases an object in his hand from a height of 1.8m as shown in the figure at the same instant that man releases the object the railway car starts slowing down at a deceleration of 1m/s^2 at what horizontal...
  3. E

    Projectile motion

    How would time of flight, the range and the maximum height of an object exhibiting the projectile motion change if A) only the vertical component of its initial velocity is increased, B) only the horizontal component of its initial velocity is increased?
  4. P

    Projectile Trajectory Can a Projectile trajectory be a Ellipse, Hyperbola or any other Geometrical shape than parabola? Thanks & Regards, Prashant S Akerkar
  5. H

    Varying Gravity and Air Resistance in projectile motion

    Salutations, I have been trying to approach a case about projectile motion considering variation of gravity acceleration and air resistance: A spherical baseball with mass "m" is hit with inclination angle $\theta$ and launching velocity $v_0$, then, the wind has a drag force equals to $F=kv$...
  6. E

    Projectile motion

    A man is standing on a railway car which moves at a constant velocity of 5m/s He releases an object in his hand from a height of 1.8m as shown in the figure; at the same instant the man releases the object, the railway car start slowing down at a deceleration of 1m/s^2. At what horizontal...
  7. Chemist116

    Is there a better method for solving this problem of projectile motion?

    The problem states the following: A soccer player $\textrm{20.0 m}$ from the goal stands ready to score. In the way stands a goalkeeper, $\textrm{1.70 m}$ tall and $\textrm{5.0 m}$ out from the goal, whose crossbar is at $\textrm{2.44 m}$ high. The stricker kicks the ball toward the goal at...
  8. M

    projectile fired

    a plane is inclined at an angle a to the horizontal . a particle up the plane with speed u at an angle b to the plane . when the particle is at its max perpendicular height above the plane it is 3/5 of the range up the plane. show tana*tanb=2/7 so far I have found the time of flight which is...
  9. M


    could someone explain question 7b to me. on the link you will find the answer to 7b but i do not understand the answer. i do not understand why they write R2<R1 and i don't see how this implies F2=uR2 and i also don't understand how this gives the least value of u necessary for equilibrium...
  10. M


    A particle is projected at initial speed u from the top of a cliff of height h, the trajectory being out to sea in a plane perpendicular to the cliff. The particle strikes the sea at a distance d from the foot of the cliff. (i) Show that the possible times of flight can be obtained from the...
  11. M


    A particle is projected vertically upwards from a point P. At the same instant, a second particle is let fall from rest vertically at q. q is directly above p. The 2 particles collide at a point r after t seconds. When the 2 particles collide, they are travelling at equal speeds. Prove that...
  12. M

    projectile fired

    A particle is projected from a point P on a horizontal plane with initial speed 35 m/s at an angle a to the plane. Show that if x and y are the horizontal and vertical distances of the particle from P then 250y=250(tan a)x-(1-tan^2 a)x^2 I'm not sure where to go with this, but I was making the...
  13. J

    Projectile motion

    HOW DO YOU GO ABOUT SOLVING THE FOLLOWING QUESTION? A person initially at rest throws a ball upward at an angle !0 with an initial speed v0. He tries to catch up to the ball by accelerating with a constant acceleration a for a time interval !t1 and then continues to run at a constant speed...
  14. B

    Academic Guidance Velocity of a projectile

    Hi Guys, First time post, I hope this is the correct location to post my 2 questions? 1/ I am trying to work out the horizontal distance a projectile will travel on level ground: Resultant Velocity: 930m/s Angle: 45deg a: -9.81m/s2 I determined that Vx & Vy were 657m/s each. I determined...
  15. D

    Stagey projectile question which I need help finishing pls

    Consider a particle undergoing projectile motion where the particle has mass of 1/10 kg which is projected θ deg above the horizontal. So the particle is projected at a given point which is situated at the point where x = x0 and y = y0 (where x0 is unequal to 0, y0 is unequal to 0 and y =...
  16. W

    Path of Projectile

    Hi guys, Below is my question: The path of a projectile is given by: y=(10x-x^2)/10 where y is height above the ground and x is distance along the ground from the launch point. Assume the ground to be perfectly flat and horizontal. Distances are measured in metres. Find : (i)...
  17. hyperbola

    Understanding projectile motion (continued)

    From my previous thread, with help from Mark FL and Skipjack: For a projectile object, it's maximum horizontal range (x_{max}) is twice it's maximum vertical range (y_{max}). x_{max} = \frac{v_R^2}{g} y_{max}= \frac{v_R^2}{2g} (x_{max} = 2y_{max}) In this instance, v_R is the...
  18. hyperbola

    Understanding vertical projectile motion.

    3D Kinematics: Vertical projectile and Maximum horizontal displacement. A dart gun shoots a dart straight up. It takes 4.0s for the dart to land back at the gun barrel. What is the maximum horizontal range of the dart gun? t = 4.0s g = -9.8m/s^2 v_R = gt = -9.8(4.0) = 39.2m/s x = x_0 +...
  19. hyperbola

    Projectile Motion Problem

    A shot-putter throws the shot (mass=7.3kg) with an initial speed of 14.4m/s at 34 degree angle to the horizontal. Calculate the horizontal distance travelled by the shot put if it leaves the athlete's hand at a height of 2.10m above the ground. I sketch a diagram and identify values...
  20. A

    Range of Projectile Formula

    Ok, This may seem simple to all of you but I am having a tough time understanding a simple concept. The range formula is as follows. r=(v² sin 2θ)/g where range is equal to velocity squared times the sine of two times the angle all divided by 9.806 "gravitational constant" If I know the...