Question

the ball density is p = 0.5 kg/dm3 . The acceleration of the ball flowing out of the water is (where g is gravitational acceleration. The water friction can be ignored):

A) 0.5 g

B) 2g

c) 0g

d) 3g

Answer 1

$$\rho a V=\rho_w g V-\rho g V\\a=g-0.5g=0.5g$$

Answer: A) 0.5 g