P = IV
I = P/V = 30 / 120 = 0.25 A.
Current = 0.25A
3 is the answer teeeeeeeeeheeeeeeeee
Pressure = Force/ Area = 3000/2 = 1500 pascal.
Answer:
Al's mass is 102.92 kg
Explanation:
As there are no external forces in the horizontal direction, the horizontal net force must be zero:
As the force is the derivative in time of the momentum, this means that the horizontal momentum is constant:

where the suffix i and f means initial and final respectively.
The initial momentum will be:

But, as they are at rest, initially


So, this means:

We know that the have an combined mass of 195 kg:
.
so:
.





Now, we can use the values:


where the minus sign appears as they are moving at opposite directions


and this is the Al's mass.
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