A researcher wants to investigate the impact of salt water on the growth of plants. Which of the following would be the best hypothesis for this experiment? Plants need water to grow, and they should also be exposed to sunlight. Plants need water to grow, and they should also be exposed to sunlight. I think salt water will help plants grow taller. I think salt water will help plants grow taller. If salt water is used to water plants, then the plants will not grow as tall as those watered with tap water. If salt water is used to water plants, then the plants will not grow as tall as those watered with tap water. I will add salt water to plants and observe how they grow. I will add salt water to plants and observe how they grow.

the area between the graph and the t axis

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.