Projectile motion at an angle problem

AI Thread Summary
A ball is thrown at a 40-degree angle with an initial velocity of 28 m/s, and the problem seeks to determine the horizontal distance it travels before hitting the ground. The vertical component of the initial velocity (Vyo) is calculated as 18 m/s, and the horizontal component (Vxo) is 21.4 m/s. The total time of flight can be found using the equation Ttotal = (2Vyo)/g, where g is the acceleration due to gravity. The horizontal distance can then be calculated using the formula X = Vi*t + (1/2)At^2, where A is zero for horizontal motion. Clarification on the next steps and equations is requested to resolve the confusion.
Anton338
Messages
1
Reaction score
0

Homework Statement


A ball is thrown at a 40 degree angle from the horizontal over level ground. If the initial velocity of the ball is 28 meters per second, how far does the ball travel before hitting the ground?

Homework Equations


X=Vi*t+(1/2)At^2
Ttotal=(2Vyo)/g
sine/cosine/tangent
A^2+B^2=C^2

The Attempt at a Solution


Vyo = 18m/s because Sin(40)*28
Vxo = 21.4m/s because Cos(40)*28

aaand I'm stuck. What do I need? Where do I go?
SO CONFUSED :P

Thanks Forum
 
Physics news on Phys.org
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...
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}...
Back
Top