If the fish starts swimming in the direction you found in (a) at a speed of 2 m/s, what would be the initial rate of change of the salt concentration at the fish’ position with respect to time?.

Write short note on the following ; collision theory, rotation angle and angular velocity, centripetal acceleration, coriolis force, and newton's law of gravitation.

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.