Thursday

December 18, 2014

December 18, 2014

Posted by **Isis** on Friday, June 14, 2013 at 9:14am.

_____ ft/s

Please help me!!!

- Physics -
**Chan**, Friday, June 14, 2013 at 9:36amsolution

height(h)= 100ft

since the object starts at rest,

initial speed(U)=0

Final speed (v)= ?

since the object is falling under the influence of gravity and downwards

a=g= 32.17 ft/s^2

so

we have

v2=u2+2gh

v2= 0+ 2*32.17*100

v2= 6434

v=80.21f/s

the final speed was 80.21 f/s

- Physics -
**Anonymous**, Sunday, September 14, 2014 at 11:12pmAn object is dropped from a platform 100 feet high.ignoring wind resistance,how long will it take to reach the ground ?

- Physics -
**Rachel**, Friday, October 10, 2014 at 2:12pmd=1/2gt^2

acceleration due to gravity= 32 ft/s^2

100= 1/2(32)t^2

100=16t^2

100/16 = 6.25

t^2= 6.25

t= 2.5

**Answer this Question**

**Related Questions**

Physics - An object is dropped from a platform 100 feet high. Ignoring wind ...

physics - An object is dropped from a platform 400 ft high. Ignoring wind ...

Physics - An object is dropped from a platform100 ft high. Ignoring wind ...

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 ...

algebra1 HELP PLEASE Thanks you!! - The function gives the speed in feet per ...

physics - An object falls from the top of the school, which is 6.06m high. ...

algebra1 HELP PLEASE Thanks you!! - The function f(x)=5 square root of x gives ...

Physics - An airplane is flying horizontally 100m above the ground at 50.0 m/s. ...

Please Help!! Math - Wind resistance varies jointly as an object's surface area ...