An electromagnetic wave transmits A. Matter but not energy
B. energy but not matter
C. Both matter and energy
D. Neither energy nor matter

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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d.7.5cm is your answer

i don't understand. explain it clearly

i really dont know but i will try okay.

so i think u would just add all them up and get your answer..