A large boulder falls from an underwater ledge and crashes on the floor of the ocean.A pod of dolphins is 800 meters away. Determined how long it takes for the soundof the crash to reach the dolphins.
O.5 sec
O.3 sec
2.3 sec
1.9 sec

I looked up the speed of sound in water ... you could have done it,
but I did it for you. It said 1,484 m/s ... I don't know if that's for fresh
water or sea water, but for 5 points I'm not going to worry about it.

   Time = (800 meters) x (1 sec / 1,484 meters)

   = (800 x 1,484) seconds

   = 0.539 second . (rounded)

The first choice on the list is the closest one.

A large boulder falls from an underwater ledge and crashes on the floor of the ocean.A pod of dolphins is 800 meters away. Determined how long it takes for the soundof the crash to reach the dolphins. O.5 sec O.3 sec 2.3 sec 1.9 sec

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A large boulder falls from an underwater ledge and crashes on the floor of the ocean.A pod of dolphins is 800 meters away. Determined how long it takes for the soundof the crash to reach the dolphins.
O.5 sec
O.3 sec
2.3 sec
1.9 sec