Posted by **Anonymous** on Monday, August 4, 2014 at 7:37pm.

A projectile is fired with an initial speed of 65.2 m/s at an angle of 34.5 degree above the horizontal on a long flat firing range. Determine

(a) The maximum height reached by the projectile,

(b) The total time in the air,

(c) The total horizontal distance covered (that is, the range), and

(d) The velocity of the projectile 1.50 s after firing.

- physics -
**Damon**, Monday, August 4, 2014 at 7:57pm
do vertical problem

find Vi, initial speed up

Vi = 65.2 sin 34.5

find t where v = 0, top of curve

v = Vi - 9.81 t

0 = Vi - 9.81 t

solve for t, time at top, half the time in the air

max height

h = 0 + Vi t - 4.9 t^2

now horizontal problem

u = 65.2 * cos 34.5 the whole time

range = u*time in air = u (2 t)

(d)

horizontal component = u the whole time

vertical component = v = Vi - 9.81 (1.5)

speed = sqrt (u^2 + v^2)

tan angle to horizontal = v/u

## Answer This Question

## Related Questions

- physics i really need help :( - A projectile is fired with an initial speed of ...
- Phsyics - A projectile is fired with an initial speed of 61.3m/s at an angle of ...
- physics - A stone is thrown horizontally outward from the top of a bridge, the ...
- science - A projectile is fired with an initial speed of 120m.s' at an angle of ...
- science - A projectile is fired with an initial speed of 120m.s' at an angle of ...
- physics - A projectile is fired at 30.0° above the horizontal. Its initial speed...
- Physics please help!! - A projectile is fired at 45.0° above the horizontal. Its...
- physics - The range R of a projectile is defined as the magnitude of the ...
- Physics - A projectile is launched at an angle of 34.0o above the horizontal. ...
- Physics - a projectile is fired with an initial speed of 53 m/s. Find the angle ...

More Related Questions