The answer is Gravity
There's always a gravity between any 2 objects in this universe. between you and your computer, between you and the floor, between your chair and your table, etc.
We just dont feel it because we live in earth which negates all of those gravities with its own.
the answer is B! it would continue to expand.....just took the test XD
Answer:
Explanation:
In a completely inelastic collision the momentum P is conserved, so can be expressed as:
As P is defined as:
Replacing:
(Eq. 1)
As the problem says that the two cars have the same mass:
And in a completely inelastic collision the velocities after the collision are equal, so:
So replacing in Eq. 1:
Solving for :
And replacing the values for the velocity:
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Answer:26.83secs
Explanation: s= UT + 1/2at^2
U=0
S= 1/2at^2
1800=1/2*5t^2
3600=5t^2
3600/5=t^2
720=t^2
t=√720
t=26.83secs