- #1
J_o_S
- 18
- 0
can i just get someone to confirm this?
just want to make sure I'm understanding this correctly.
A ball is rolled up a ramp. The initial velocity and the acceleration down the ramp due to gravity is given.
Vi = 10 m/s
a = 2 m/s
-------------------------------------------------
To find out when the ball is at rest I use:
Vf = Vi + at
where,
vf = 0
vi = 10
a = -2
---------------------------------------------------
To find out the when the ball's velocity is 6 m/s I use the same formula:
Vf = Vi + at
where
vf = 6
vi = 10
a = -2
-----------------------------------------------------
to find out how long it takes for the ball to get back to its starting point:
(The time it takes to get to the highest point is already known from the first part.)
I first find d:
d = [(Vi + Vf)/2]t
Then the time it takes to get back down can be found by:
d = Vit + .5at^2
d = .5at^2
Then I add the time it takes to get up with the time it takes to get down for the total time.
And the time it takes to get up should = the time it takes to get down.
--------------------------------------------------------------------
Everything look ok here?
thanks for looking
just want to make sure I'm understanding this correctly.
A ball is rolled up a ramp. The initial velocity and the acceleration down the ramp due to gravity is given.
Vi = 10 m/s
a = 2 m/s
-------------------------------------------------
To find out when the ball is at rest I use:
Vf = Vi + at
where,
vf = 0
vi = 10
a = -2
---------------------------------------------------
To find out the when the ball's velocity is 6 m/s I use the same formula:
Vf = Vi + at
where
vf = 6
vi = 10
a = -2
-----------------------------------------------------
to find out how long it takes for the ball to get back to its starting point:
(The time it takes to get to the highest point is already known from the first part.)
I first find d:
d = [(Vi + Vf)/2]t
Then the time it takes to get back down can be found by:
d = Vit + .5at^2
d = .5at^2
Then I add the time it takes to get up with the time it takes to get down for the total time.
And the time it takes to get up should = the time it takes to get down.
--------------------------------------------------------------------
Everything look ok here?
thanks for looking