Answer:
2 m/s
Explanation:
The impulse exerted by the obstacle on the block is equal to the change in momentum of the block:
where we put a negative sign because the direction of the impulse is south, which is opposite to the initial direction of travelling of the block (north).
The change in momentum is also equal to
where
m = 3 kg is the mass of the block
v is the final velocity
u = +4 m/s is the initial velocity
Solving the equation for v, we find the final velocity of the block:
and the positive sign means the direction is still north.
Answer:
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Explanation:
Answer:
2.88 m/s
Explanation:
We can use equation of motion to solve this
Of course steady state condition occurs in almost any system but time it will occurs varies among system. for this kind of system, conduction, steady state conduction occurs when the temperature change from one point to the point is already constant. steady state is not achieved immediately because the heat travels and material will not be heated at the same way at the starting point.