Presumably a 20 degree incline?
the question didn't mention the word "degree" or " ْ "
it's exactly as I wrote it .
So I toke 20 as the slop
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x=? vi=5 vf=0 a=?
F = ma
(m g cos20 = m a) / m
9.8 cos20 = a
a=9.21
x=25/(2a)
x=25/(18.42)
x=1.37 m
Which is also wrong
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180 = 90+20+...
Homework Statement
A box is given an initial velocity of 5m/s up a smooth 20 incline surface . The distance the box travel before coming to rest is?
Homework Equations
I can't solve it correctly , I can't get the idea of this question
The Attempt at a Solution
x= ?
vi=5
v=0...
This is the way i did it
a- Car 1
N-F= ma
N - mg = ma
N= mg+ma
N= 3*9.8 + 3*9.8 = 29.4 + 29.4 =58.8
Car 2
The same way so its N =19.6
b- F-T = m a
F= mg= 3+1 * 9.8 = 39.2
so
39.2 - T = 1+3 * a
-T = -39.2 +4*a
a=?
I COULDN'T FIGURE OUT HOW TO FIND THE ACCELERATION.!
PLZ...
A child pulls a train of 2 cars with a horizontal force F of 10N .
Car1 has a mass of m1=3kg, and car2 has a mass of 1kg
The mass of the string connecting the the cars is small enough to be set equal to zero, and the friction can be neglected .
a- Find the normal force exerted on each car...