Object Mass (grams)
table tennis ball 2.7
baseball 147.0
small rock 248.2
penny 2.5
A student drops the four objects listed from a height of 2 meters into a bucket of water. Which object will have the greatest kinetic energy?
(1 point)
AAAaannndd the bot gets it wrong yet again!
the rock -- it has the greatest mass, and they all have the same velocity.
To determine which object will have the greatest kinetic energy, we need to calculate the kinetic energy for each object using the formula:
Kinetic Energy (KE) = (1/2) * mass * velocity^2
Since all the objects are dropped from the same height (2 meters) into a bucket of water, we can assume they all have the same velocity when they hit the water.
Let's calculate the kinetic energy for each object using their respective masses:
1. Table tennis ball:
KE = (1/2) * 2.7 g * velocity^2
2. Baseball:
KE = (1/2) * 147.0 g * velocity^2
3. Small rock:
KE = (1/2) * 248.2 g * velocity^2
4. Penny:
KE = (1/2) * 2.5 g * velocity^2
Since the velocity is the same for all objects, we can ignore it for the purpose of comparison. Therefore, we can compare the objects based on their mass alone.
Based on the given masses, the small rock (248.2 grams) will have the greatest kinetic energy because it has the highest mass out of all the objects.
To determine which object will have the greatest kinetic energy, we need to take into account both the mass of the object and the height from which it is dropped.
The formula to calculate the kinetic energy of an object is:
Kinetic Energy = 0.5 * mass * velocity^2
However, in this case, we are assuming all objects are dropped from the same height, so the height doesn't affect the calculation. Therefore, we only need to consider the mass of each object.
Looking at the given masses:
- table tennis ball: 2.7 grams
- baseball: 147.0 grams
- small rock: 248.2 grams
- penny: 2.5 grams
To determine which object has the greatest kinetic energy, we can compare the masses of the objects. The greater the mass, the greater the kinetic energy.
In this case, the small rock has the greatest mass (248.2 grams), so it will have the greatest kinetic energy when dropped from the same height as the other objects.