Imagine a car crash. A car coming at a high speed has a head on collision with a car at rest. When the car makes impact, it will move the other car with it at a slower speed then it was travelling at. In this case, the velocity decreased since the car slowed down, but the mass increased since there are now two cars moving. Momentum was conserved because the change in mass accounts for the loss of velocity.
Answer:
Explanation: O B. Diffraction
Yes, because you would need friction to slow down the rollercoaster to a stop.
You have learned your lesson well, Suhay. Your statement is correct.
The light rays from the fish BEND when they flow out of the water into the air. But our primitive brain still believes that the light rays flow STRAIGHT from the fish. The result is that the fish does not APPEAR to be at that place where it really is.
Answer:
Explanation:
Since , we calculate the resistance rate by deriving this formula with respect to time:
Deriving what is left (remember that ):
So we have:
Which for our values is (the rate of <em>I(t)</em> is decreasing so we put a negative sign):