A boat of mass 250 kg is coasting, with its engine in neutral, through the water at speed 1.00 m/s when it starts to rain with incredible intensity. The rain is falling vertically, and it accumulates in the boat at the rate of 100 kg/hr.

(a) What is the speed of the boat after 0.500 hr has passed? Assume that the water resistance is negligible.

(b) The drag is proportional to the square of the speed of the boat, in the form
Fd=bv2 where b=0.5 N⋅s2/m2. What is the acceleration of the boat just after the rain starts? Take the positive x-axis along the direction of motion.

in this image, you can see solar radiation going through ocean water.

no image, but probably absorption

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.

answer( sicar );

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