1. You stand 4 meters away from a light and measure the intensity to be 1 W/m? What will be the intensity if you move to a position 8 meters away from the bulb?
PLEASE HELP ME

1w a meter

Explanation:

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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i don't understand. explain it clearly