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physicsnewby
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Homework Statement
1 An object is pushed up a smooth incline of 30 degrees with a speed of 4m/s. In seconds, how long will it take before the object stops and reverses direction?
Vf= Vo - at
Vf= Vo - at
0 = 4 - (9.8)t
t = 0.41s
I know this is wrong because the angle isn't accounted for, but I'm not sure where to use it. I'm not sure what the right answer is either.
2 An object is placed on an incline of 30 degrees . The object is pushed up the incline at the initial speed vo=4m/s. How far does it travel before stopping and reversing direction?
Vf= Vo - at
Vf= Vo - at
0 = 4 - (9.8)t
t = 0.41s
x= (Vxo)(t)
x= (4)(0.41)
x=1.6m
For some reason, this gives me the right answer, but I again don't use the 30 degrees anywhere. What should I be doing?
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