Projectile Motion (1 Viewer)

[Lukybear]

At the highest point of its path, a body has a velocity of 10 m/s and is 8m above the ground. Find the angle of projection and initial velocity.

 

[Omie Jay]

Craville Studies - Projectile Motion Calculator

 

[Omie Jay]

oh wait this is in the math section, not physics, i guess its still kinda relevent maybe..

 

[Lukybear]

Sorry omie. But ive changed question. +reps for at least trying. [must spread rep before giving it to omie jay]

 

[Lukybear]

Bump?

 

[Pwnage101]

At the highest point of its path, a body has a velocity of 10 m/s and is 8m above the ground. Find the angle of projection and initial velocity.

x''=0
x'=c
x=ct+d

y''=-10
y'=-10t+e
y=-5t^2+et asuming launch from 'the ground'


At the highest point of its path y-velocity = y'= 0, so x'=10 m/s.

y'=0 when y=8 ----> 10t=e ----> t=e/10 ----->8=-5(e/10)^2+e^2/10 ---> e=12.649

y'(0)=e=12.649
x'(0)=x'=10

initial velocity = 16.1245 m/s
launch angle = 51.67 degrees

NB i have used g=10m/s^2.

 

[Lukybear]

Thxs very much.