A student is testing how mass impacts kinetic energy. From the same height on a diving board, she drops two balls into a swimming pool. One ball has a bigger mass than the other.
a. How would the splashes of the two balls compare?
(1 point)
Responses
The ball with the higher mass would make a bigger splash.
The ball with the higher mass would make a bigger splash.
The size of the splash is independent of the mass of the ball.
The size of the splash is independent of the mass of the ball.
The balls would make splashes of the same size.
The balls would make splashes of the same size.
The ball with the lower mass would make a bigger splash.
The ball with the lower mass would make a bigger splash.
Question 2
b. How does the mass of a falling object impact the object's kinetic energy?(1 point)
Responses
Mass does not impact kinetic energy.
Mass does not impact kinetic energy.
An increase in mass causes a decrease in kinetic energy.
An increase in mass causes a decrease in kinetic energy.
An increase in mass causes an increase in kinetic energy.
An increase in mass causes an increase in kinetic energy.
A decrease in mass causes an increase in kinetic energy.
A decrease in mass causes an increase in kinetic energy.
Question 3
c. What happens to the kinetic energy of a ball when it hits the water?(1 point)
Responses
Some of the energy is transferred to the water.
Some of the energy is transferred to the water.
All of the kinetic energy is kept by the ball.
All of the kinetic energy is kept by the ball.
Overall, kinetic energy is gained.
Overall, kinetic energy is gained.
Overall, kinetic energy is lost.
Overall, kinetic energy is lost.
c. Some of the energy is transferred to the water.
a. The ball with the higher mass would make a bigger splash.
b. An increase in mass causes an increase in kinetic energy.
c. Some of the energy is transferred to the water.
a. The ball with the higher mass would make a bigger splash. This can be explained by the principle of conservation of momentum. When an object falls into water, it experiences a change in momentum, which is equal to the product of its mass and velocity. The ball with higher mass will have a greater change in momentum upon hitting the water, causing a larger splash.
b. An increase in mass causes an increase in kinetic energy. The kinetic energy of an object is given by the equation KE = (1/2)mv^2, where m is the mass of the object and v is its velocity. As mass increases, the kinetic energy also increases, as it is directly proportional to mass.
c. Some of the kinetic energy is transferred to the water when the ball hits it. When the ball is in motion, it has kinetic energy. Upon hitting the water, some of this energy gets transferred to the water in the form of splashing and waves, while some energy may also get converted into other forms, such as sound or heat. However, the overall kinetic energy is not lost as energy cannot be created or destroyed; it is simply transferred or transformed into different forms.