Q:1-A fighter plane flying horizontally at an altitude of 1.5 km with speed 720 kmph passes directly overhead an anti aircraft gun.At what angle from vertical should the gun be fired for the shell with muzzle speed 600m/s to hit the plane? At what minimum altitude should the pilot fly to avoid being hit?
Q:2-Obtain an expression for work done in moving a body up an inclined plane if the coefficient of friction between the body and the plane is u (meu).
no weird ans plz.
i will b very thankful 2 d person who gives me d answers!!!
2007-10-18 04:59:08 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Airplane velocity is 720,000/86400 = 200 m/sec. The horizontal component of the gun must equal 200 m/sec.
tanΘ = 200/600 = 18.3 degs from vertical.
2007-10-18 05:17:53 · answer #1 · answered by gebobs 6 · 0⤊ 0⤋
360/n - sixteen = a hundred and twenty/n ==> 360/n - sixteen + sixteen = a hundred and twenty/n + sixteen ==> 360/n = a hundred and twenty/n + sixteen ==> 360/n - a hundred and twenty/n = a hundred and twenty/n + sixteen - a hundred and twenty/n ==> 360/n - a hundred and twenty/n = sixteen ==> (360 - a hundred and twenty)/n = sixteen ==> 240/n = sixteen ==> (n/sixteen)*(240/n) = (n/sixteen)*sixteen ==> 240/sixteen = n ==> n = 15
2016-10-13 01:56:17 · answer #2 · answered by Anonymous · 0⤊ 0⤋
why did you take physics if you don't get it??
2007-10-20 05:58:57 · answer #3 · answered by anma_cy 3 · 0⤊ 0⤋