A student drops a 350-gram rock and a 500-gram rock into a pool from a height of 8 meters. Which statement about the investigation is accurate?(1 point)
Responses
The 350-gram rock causes a larger splash because it has less mass.
The 350-gram rock causes a larger splash because it has less mass.
The 500-gram rock causes a smaller splash because it has more mass.
The 500-gram rock causes a smaller splash because it has more mass.
The 350-gram rock causes a smaller splash because it has more kinetic energy.
The 350-gram rock causes a smaller splash because it has more kinetic energy.
The 500-gram rock causes a larger splash because it has more kinetic energy.
The 500-gram rock causes a larger splash because it has more mass.
Use the table of information from a student's investigation to answer the question.
Object Splash Size Ranking
W 2
X 4
Y 1
Z 3
A student drops several objects of the same size into a bucket of water from a height of 2 meters. She ranks the splash size from 1-4, with 1 being the smallest splash and 4 being the largest splash. Which object most likely has the greatest mass?
(1 point)
Responses
object Y
object Y
object W
object W
object Z
object Z
object X
object X
Use the table of information to answer the question.
Fruit Mass (kg) Speed (m/s)
Watermelon A 4 2
Watermelon B 4 4Two watermelons fall off a kitchen counter. The masses and speeds of the fruits are in the table. How do the kinetic and/or the potential energies of the fruits compare?(1 point)
Responses
Both fruits have only potential energy and no kinetic energy.
Both fruits have only potential energy and no kinetic energy.
The watermelon A has more kinetic energy.
The watermelon A has more kinetic energy.
Both fruits have the same kinetic and potential energy.
Both fruits have the same kinetic and potential energy.
The watermelon B has more kinetic energy.
Both fruits have the same kinetic and potential energy.
The correct statement about the investigation is: The 500-gram rock causes a larger splash because it has more mass.
To determine which statement about the investigation is accurate, we can examine the factors that affect the size of the splash when the rocks are dropped into the pool.
The kinetic energy of an object is given by the formula KE = 0.5 * m * v^2, where KE is the kinetic energy, m is the mass of the object, and v is the velocity of the object.
When the rocks are dropped from the same height, they will have the same initial potential energy, which is converted into kinetic energy as they fall. Since the rocks have different masses, their velocities will be different when they hit the water.
Now, let's compare the kinetic energies of the rocks:
For the 350-gram rock:
Mass (m1) = 350 grams = 0.35 kg
Velocity (v1) = ?
For the 500-gram rock:
Mass (m2) = 500 grams = 0.5 kg
Velocity (v2) = ?
Since the rocks are dropped from the same height, their potential energies are the same, which means their kinetic energies should also be the same when they hit the water.
Based on this analysis, neither statement about the investigation is accurate. The size of the splash will not be determined solely by the mass or kinetic energy of the rock, but rather by other factors such as its shape, speed, angle of entry, and surface area.