You are told 3 things...1. That there are two objects with equal masses. 2. Both objects are in motion. 3. One object has a greater kinetic energy than the other. How is this possible? (1 point)
Responses
One object has a greater volume than the other object.
One object has a greater volume than the other object.
One object has a greater density then the other object.
One object has a greater density then the other object.
One object is blue and one object is red.
One object is blue and one object is red.
One object has a greater speed than the other object.
One object has a greater speed than the other object.
One object has a greater mass than the other object.
that was wrong
Apologies for the incorrect response. One possible explanation for two objects with equal masses, both in motion, but with different kinetic energies, could be that one object is moving at a higher velocity than the other. Kinetic energy is directly proportional to the square of the velocity, so even with equal masses, the object with the higher velocity would have a greater kinetic energy.
wrong
Predicting Changes in Kinetic Energy Quick Check 2 of 52 of 5 Items Question A large truck and a small car are moving at the same speed, traveling up and down hills, and over bumpy roads. Which one has more kinetic energy?(1 point) Responses
The truck has more kinetic energy because it has a greater mass.
The truck has more kinetic energy because it has a greater mass.
The car has more kinetic energy because it moves fast down hills.
The car has more kinetic energy because it moves fast down hills.
The car and truck have the same kinetic energy.
The car and truck have the same kinetic energy.
The truck has less kinetic energy because it has greater mass.
which object has the greatest kinetic energy
To understand how it is possible for two objects with equal masses to have different kinetic energies, we need to consider the formula for kinetic energy. The formula for kinetic energy (KE) is KE = 1/2 * mass * velocity^2.
Since the mass of the objects in question is given to be equal, we can disregard it as a factor affecting the difference in kinetic energy.
The only remaining variable in the equation is velocity (or speed), which means the difference in kinetic energy can be attributed to the difference in velocity between the two objects.
Therefore, it is possible for the objects to have different kinetic energies if one object has a greater speed (velocity) than the other object. This is because the kinetic energy is directly proportional to the square of the velocity.
To determine which object has a greater kinetic energy, you would need to measure or compare the velocities of the two objects. Congratulations! You have correctly identified that "One object has a greater speed than the other object" as the correct explanation.