Wednesday

August 27, 2014

August 27, 2014

Posted by **Mykmoloko** on Wednesday, February 9, 2011 at 10:01am.

- science -
**cheerie**, Thursday, May 5, 2011 at 6:20amuse formula vfy= viy+gt...

vfy= 0, this is always true when the object reaches its maximum height.

viy= vi sin degress (horizontal)

viy= 120sin 60

viy= 103.92

g= -9.81 m/s2

thus:

vfy= viy + gt

0= 103.92 + (-9.81)(t)

t = -1o3.92/-9.81

1o.59seconds from the top of the cliff.

getting the time...

compute for the dy or the height from the top of the cliff...

dy= viyt + 1/2gt (time is squared)

add then the dy from the top of the cliff with the height of your cliff which is 5o to get the max.height.

using the new dy, (50 + the dy you computed from the top of the cliff), use the same formula of dy... now the viy is 0 since when the object is already falling, the final speed when the object has reached it max height is o, going down, the value vf will become the vi of the initial speed.

(im not sure but i guess this is how it is done)

the get the distance of the flight by:

dy=viyt - 1/2 gt2 (please square the t,cant do superscript here). Suppose you get the distance

**Related Questions**

science - A projectile is fired with an initial speed of 120m.s' at an angle of ...

physics - A projectile is fired at an angle of 30ᵒ above the horizontal ...

physics - a projectile with a muzzle velocity of 550 m/s is fired from the a gun...

physics - A projectile is launched from ground level to the top of a cliff which...

Physics - A projectile is launched from ground level to the top of a cliff which...

Physics 124 - A projectile is fired from the top of a cliff at 14.2 m/s at an ...

Physics - a) A cannonball is fired horizontally from the top of a cliff. The ...

physics - A projectile is shot from the edge of a cliff 125 m above ground level...

physics - A projectile is fired into the air from the top of a cliff of height h...

Physics - A projectile is shot from the edge of a cliff h = 225 m above ground ...