# physics

posted by .

how fast will a object be traveling when drppped from 30 feet high

• physics -

I assume that you mean what will the velocity of an object be at impact when dropped from a height of 30 feet?

Using h = Vo(t) + 32.2(t^2)/2 and assuming zero velocity when dropped,
30 = (0(t + 32.2(t^2)/2
60 = 32.2t^2
t^2 = 1.863 making t = 1.365 sec.

From Vf = Vo + 32.2t, the velocity at impact becomes Vf = 32.2(1.365) = 43.95ft./sec.

## Similar Questions

1. ### physics

a object is traveling horizontaly when it reaches a 50meter drop how fast must the object be traveling to land 90 meters away from the edge of the drop
2. ### physics

An object traveling 200 feet per second slows to 50 feet per second in 5 seconds. Calculate the acceleration of the object.
3. ### physics

Suppose a radar gun on first base catches a baseball 30 feet away from the pitcher and registers 50 feet per second. How fast is the ball really traveling?
4. ### physics

If an object takes 2.75 seconds to move twenty feet how fast is the object moving?
5. ### Physics

**I JUST NEED THE STEPS ON HOW TO SOLVE THE PROBLEMS** An object experiences an acceleration of 6.8m/s^2. As a result, it accelerates from rest to 24m/s. How much distance did it travel during that acceleration?
6. ### physics

An object in launched directly upward at 54 feet per second (ft/s) from a platform 75 feet high. What will be the object's maximum height?
7. ### physics

a student drops an object out the window of the top floor of a high-rise dormitory a) neglecting air resistance, how fast is the object traveling when it strikes the ground at the end of 3.0 s?
8. ### Physics

How fast is an object traveling after 3seconds if its terminal velocity is about 35 m/s.?
9. ### physcial science

a student drops an object out of the window of the top floor of a high rise dormitory, how fast is the object traveling when it strikes the ground at the end of 3.4s
10. ### math

A light is at the top of a pole 80 feet high. A ball is dropped at the same height from a point 20 feet away from the light. A wall 80 feet high, 60 feet away from the light is built. Assuming the ball falls according to the Newtonian …

More Similar Questions