University:
University of Greenwich
Course:
BSC152 | Engineering Physics
Academic year:

2021
Views:

340

Pages:

4
Author:

Jesly V

* PROJECTILE MOTION A projectile which ones is the name given any body thrown into space inctual velocity move influence of gravity propelled by engine with Some thereafter under the alone without being or fuel. A javaline javeline thrown on by by an athelete An object dropped from an aeroplane A A bullet fire from a rifle stone homzontally pom the top of a flower. Projectile fixed at an angle o withen the honzontal. Suppose a body is projected with initial velocity u, making an angle horizontal the velocity i. the o with the has two components, horizontal component u cos & remains the same throughout the vertical component u which the motion which changes with time under the influence of graucty. Time for maximum height (Tm) Let to be the time taken by the projectile to reach the highest pocit, velocity is 0. maximum height (hm). At the the vertical component of We have, v = u + at 0 = u sino-gtm gtm u sin o tm = U sin o Time of flight (T) from the the time taken by instant ets is the projectile projected from from till Page No it reaches a point in the honzontal plasse 2 u sis o g Maximum height (mm) the vutical distance atlained by the projectile above the horizontal plane. At the highest point vertical component of velocity a O. We have, 2 2 as 0- (usino)²= 2 2 - usin² -2gh +2g h 42 4² sin² 2g v2 = Horizontal range (R) the horizontal distance travelled by the projectile during its time of flight. Horizontal range. Horizontal component x 142 of velocity. R u cos x Ty R u cos e 2 usine Page No. The horizontal range of a projectile of maximum when of i& of 45° horizontal. ted at projected an angle