Adolphin experiences a force of 320 n [u] when it jumps out of the water. the acceleration of the dolphin is 2.60 m/s2 [u]. a) calculate the mass of the dolphin. b) what would be the acceleration of the dolphin if it had the same strength but half the mass?

a) The mass of the dolphin can be calculated by using Newton's second law:

where

F=320 N is the force experienced by the dolphin

m is the dolphin mass

is the acceleration of the dolphin

Rearranging the equation and substituting the numbers, we find the mass of the dolphin:

b) If the mass of the dolphin is halved, the new mass is:

And by using again Newton's second law, we can find the new acceleration of the dolphin:

so, the acceleration is twice the original acceleration.

sonar - device which is used to find the submit submarines, sankalp ship. sonar waves consists of a transmitter and detector which are installed in the observation centre on board of a ship. the ultrasonic waves are sent into the sea at high frequency about 1000 khz in all direction.

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s