Question

a submarine is at depth of 200 m below the sea level.it descends at uniform rate of 3m/s for 20 secobds. find its depth from the surface after 20 seconds
Nisha
140
Steve
nope. It started out at -200, and then descended farther.
Nisha
-200-3(20)=-260
Steve
that's better
Priya
140