Wednesday
April 16, 2014

Homework Help: Physics

Posted by sam on Sunday, September 17, 2006 at 2:40pm.

A 145. drop tower. This is an evacuated vertical tower through which , among other possibilities, a 1m diameter sphere containing an experimental package can be dropped.

a) How long is the sphere in free fall?

b)What is its speed just as it reached a catching device at the bottom of the tower?

c)When caught, the sphere experiences an average deceleration of 25g as its speed is reduced to zero. Through what distance does it travel during the deceleration?

I completly don't understand this question.


which part don't you understand?

For (a), write equation for height (Y) vs. time and solve for the time t when Y=0.

For (b), use V = g t

For c, use the ground-impact velocity V that you get in (b). To decelerate from that velocity within a distance X,
V = sqrt (2 a X)
where a = 25 g
X = V^2/(2 a)

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Maths - On the horizontal plane there is a vertical tower is a vertical tower ...
physics - a ball is dropped from height of tower 300m .after 1s another ball is...
Math Word Problem - A cross section of a nuclear cooling tower is a hyperbola ...
Math! - From the top of a 40m fire tower, a fire ranger observes smoke in tower ...
Math - Two fire towers, A and B, are 20.3 km apart. From tower A, the bearing of...
plane and trigonometry - a 30 foot flagstaff is fixed in the center of a ...
Math - From an observation tower that overlooks a runway, the angles of ...
Algebra - At a point 16 yards from the base of a tower,the distance to the top ...
physics - A rock is dropped from a very tall tower. If it takes 4.1 s for the ...
trgonometry - a tower and a monumement stand on a level plane. The angles of ...

Search
Members