I got both of them already.
The first one I have to use
Acceleration= [(Final Velocitysquared - Initial Velocitysquared)]/ 2*distance in m
so I changed 2.3 cm > .023m
And then
0-25^2 625m/s
A= _______ = _____ = 13,586.957 m/s
2 (.023m) .046m
For the second one. All I had to find...
oh yeah.
I got both of them already.
The first one I have to use
Acceleration= [(Final Velocitysquared - Initial Velocitysquared)]/ 2*distance in m
so I changed 2.3 cm > .023m
And then
0-25^2 625m/s
A= _______ = _____ = 13,586.957 m/s
2 (.023m)...
my textbook doesn't help me because it uses different situations... but it doesn't help me understand the 45 degrees part... do I find the acceleration first like so:
(sin45*1620)
or something of that sort... I'm still not sure how to.
I'd really appreciate it if you helped me out...
... dangit ...
Wait ok so since I'm dealing with a 45 degree drop... does that mean I'll take the F=MA and divide it by 2?
I'm pretty sure that that's what I'm supposed to do...
I'm not sure what the final and initial velocity is ...
I'm thinking that the final is 0 since the axe stops in the end...
But I'm still skeptical about the initial... how do I find the initial?
Please help? =)
[SOLVED] Homework: Forces and Acceleration
1.)
While chopping down his father's cherry tree, Anthony discovered that if he swung the axe with a speed of 25 m/s, it would embed itself 2.3 cm into the tree before coming to a stop.
a.) If the axe head had a mass of 2.5 kg, how much force was the...