Question

The initial level of a submarine is 15 m below the sea level. It is descending 6 m per second. What will be its position after 10 seconds?

Answer 1

Answer:

75m below the sea level

Step-by-step explanation:

Initial 15m + 6m each second for 10 seconds

i.e 15m + 6(10)

75m

Answer 2

Answer:-75m below sea level

Step-by-step explanation:

initial position=-15m

final pos=initial position+descending

so,rate of depreciation is 6m per second...and t=10sec

therefore, depreciation is 6*10=60m

so,final pos is -15-60

so,the final pos is -75m below sea level

hope it is clear