8. What is the weight of dog with a mass of 30 kg? weight = mass x gravity *
O 30 N
O 300 N
O 3N
O 300 lbs

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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explanation:

v=ir = 3x15 =45 v

that would be because of both gravity and friction. so     c