Homework Help: pyhsics

Posted by Alan on Tuesday, March 15, 2011 at 6:14pm.

At t= 1.0s, a 0.61 kg object is falling with a speed of 6.0 m/s. At t= 2.0s, it has a kinetic energy of 25 J.

1. What is the kinetic energy of the object at t= 1.0s?

2. What is the speed of the object at t= 2.0s?

3. How much work was done on the object between t= 1.0s and t= 2.0s?

pyhsics - bobpursley, Tuesday, March 15, 2011 at 6:16pm
Where are you stuck on this?
pyhsics - Alan, Tuesday, March 15, 2011 at 6:30pm
never mind, i figured out how to do this problem

1. K = 11J
2. v = 9.1m/s
3. W = 14J

the wording was just alittle bit confusing
pyhsics - Mara, Thursday, March 31, 2011 at 2:02pm
I'm actually trying to do this problem right now. I'm a bit stuck on the second part. How do you find the speed of the object at t = 2.0s?

Every kinematic equation I've tried to use requires acceleration, and I can't find acceleration with having the final velocity... ahhh.

Answer this Question

Related Questions

physics - An object of mass 200.0kg is moving from rest under the influence of ...
physics - An object of mass 200.0kg is moving from rest under the influence of ...
Physics - A bicyclist starts from rest and accelerates at a constant rate for 15...
Physics desperate Help! - A 2.0 kg lunch box is sent sliding over a frictionless...
physics - A space vehicle accelerates uniformly from 50m/s at t=0 to 182m/s at t...
physics - A child slides down a hill on a toboggan with an acceleration if 1.5 m...
physics - t(s)=0.0,1.0,2.0,3.0,4.0,5.0,6.0,7.0 v(m/s)=0.0,4.6,8.9,13.4,18.0,22.9...
physics - If an object is dropped from a tall building and hits the ground 3.0 s...
College Physics - An object initially at rest experiences an acceleration of 1.4...
physics - A crate with mass 32.5 kg initially at rest on a warehouse floor is ...

For Further Reading

First Name:
School Subject:
Answer: