Posted by **mw** on Sunday, January 4, 2009 at 6:42pm.

An object with a mass of 49 N falls out of a plane going 20.0 m/s at 300 m above the ground.

1)How do I find the time that the object is in the air?

2)The horizontal distance of the object?

Could someone help me out?

- Physics -
**Damon**, Sunday, January 4, 2009 at 7:23pm
N means Newtons and is FORCE, in this case of gravity (the "weight").

The mass is in KILOGRAMS

and the force 49 N = m g = m (9.8) approximately on earth.

HOWEVER - luckily in this problem all of that matters not at all. It does not matter what the mass or weight is at all. It accelerates downward at 9.8 m/s^2 and keeps going at 20 m/s horizontally.

distance down = (1/2)(9.8) t^2

300 = 4.9 t^2

t = 7.82 seconds in the air

now multiply that by 20.0 m/s to find the horizontal distance.

(Notice that the bomb hits right under the plane if the plane keeps going at 20 m/s straight. Always bank and climb after dropping bombs.)

## Answer This Question

## Related Questions

- Algebra 2 - An object is dropped from a small plane. As the object falls, its ...
- Physics - An object with mass 8.5kg is moving vertically upward with a velocity ...
- Physics - You lean over the edge of a building that is 106 meters above the ...
- Physics - a) Newton's law of motion states that the acceleration acting on a ...
- Physics - a) Newton's law of motion states that the acceleration acting on a ...
- Physics - One object is thrown straight up at 54.9 m/s from the ground at the ...
- Physics - A plane flying in a straight line at constant altitude of 2000 m above...
- Physics problem - An object with a mass of 100kg is dropped from an 80 meter ...
- Physics problem - An object with a mass of 100kg is dropped from an 80 meter ...
- Physics - Consider the system shown in the figure with m1 = 25.00 kg, m2 = 10.20...

More Related Questions