Question
6 of 24 Items
Question
As shown below, an object with a mass of 5 kg is moving at a speed of 10 m/s. Another object with a mass of 10 kg is moving at a speed of 5 m/s.
Which of the objects has higher kinetic energy?
(1 point)
Responses
The 10 kg object has higher kinetic energy.
The 10 kg object has higher kinetic energy.
The 5 kg object has higher kinetic energy.
The 5 kg object has higher kinetic energy.
Both objects have zero kinetic energy.
Both objects have zero kinetic energy.
The objects have equal kinetic energy.
The objects have equal kinetic energy.
Question
As shown below, an object with a mass of 5 kg is moving at a speed of 10 m/s. Another object with a mass of 10 kg is moving at a speed of 5 m/s.
Which of the objects has higher kinetic energy?
(1 point)
Responses
The 10 kg object has higher kinetic energy.
The 10 kg object has higher kinetic energy.
The 5 kg object has higher kinetic energy.
The 5 kg object has higher kinetic energy.
Both objects have zero kinetic energy.
Both objects have zero kinetic energy.
The objects have equal kinetic energy.
The objects have equal kinetic energy.
Answers
The formula to calculate kinetic energy is KE = 1/2mv^2, where m is the mass of the object and v is its velocity.
For the 5 kg object with a speed of 10 m/s, the kinetic energy would be KE = 1/2 * 5 kg * (10 m/s)^2 = 250 J.
For the 10 kg object with a speed of 5 m/s, the kinetic energy would be KE = 1/2 * 10 kg * (5 m/s)^2 = 125 J.
Therefore, the 5 kg object has higher kinetic energy, so the correct answer is:
The 5 kg object has higher kinetic energy.
For the 5 kg object with a speed of 10 m/s, the kinetic energy would be KE = 1/2 * 5 kg * (10 m/s)^2 = 250 J.
For the 10 kg object with a speed of 5 m/s, the kinetic energy would be KE = 1/2 * 10 kg * (5 m/s)^2 = 125 J.
Therefore, the 5 kg object has higher kinetic energy, so the correct answer is:
The 5 kg object has higher kinetic energy.
Related Questions
3 of 103 of 10 Items Question As shown below, an object with a mass of 5 kg is moving at a speed of...
Magnitude and Direction of Force Quick Check
4 of 54 of 5 Items
Question
What is force directly...
Using Potential and Kinetic Energy Quick Check
5 of 55 of 5 Items
Question
Which factors...
Collision Forces Quick Check
1 of 51 of 5 Items
Question
How will an object at rest be affected...