Physics
Grade-7
Easy
Question
Identify the correct formula for calculating kinetic energy.
- KE = 2mv
Hint:
KE = 1/2 mv²
The correct answer is:
Kinetic energy is directly proportional to the mass of the object and to the square of its velocity, that is, K.E.=1/2 mv².
If the mass has units of kilograms and the velocity of metres per second, the kinetic energy has units of kilograms metres Squared per second squared.
Related Questions to study
Physics
The SI unit of kinetic energy is ______.
The SI unit of kinetic energy is ______.
PhysicsGrade-7
Physics
Kinetic energy is defined as
Kinetic energy is defined as
PhysicsGrade-7
Physics
What is the new kinetic energy of a body of mass m, moving at a velocity, v, when its velocity becomes 5 v
What is the new kinetic energy of a body of mass m, moving at a velocity, v, when its velocity becomes 5 v
PhysicsGrade-7
Physics
What is the new kinetic energy of a body of mass m, moving at a velocity, v, when its velocity becomes v/3
What is the new kinetic energy of a body of mass m, moving at a velocity, v, when its velocity becomes v/3
PhysicsGrade-7
Physics
What is the new kinetic energy of a body of mass m, moving at a velocity, v, when its velocity becomes 3 v
What is the new kinetic energy of a body of mass m, moving at a velocity, v, when its velocity becomes 3 v
PhysicsGrade-7
Physics
Which of the bodies given below has more kinetic energy when mass is constant?
A) 3 m/s
B) 6 m/s
Which of the bodies given below has more kinetic energy when mass is constant?
A) 3 m/s
B) 6 m/s
PhysicsGrade-7
Physics
Velocity is ____ proportional to the kinetic energy.
Velocity is ____ proportional to the kinetic energy.
PhysicsGrade-7
Physics
What can you say about the kinetic energy when both have the same mass?
A) 2 m/s
B) 
m/s
What can you say about the kinetic energy when both have the same mass?
A) 2 m/s
B) m/s
PhysicsGrade-7
Physics
Which of the bodies given below has less kinetic energy when both have the same mass?
A) 3 m/s
B) 6 m/s
Which of the bodies given below has less kinetic energy when both have the same mass?
A) 3 m/s
B) 6 m/s
PhysicsGrade-7
Physics
Which of the bodies given below has more kinetic energy when both have the same mass?
A) 2 m/s
B) 3 m/s
Which of the bodies given below has more kinetic energy when both have the same mass?
A) 2 m/s
B) 3 m/s
PhysicsGrade-7
Physics
Which of the bodies given below has less kinetic energy when both have the same mass?
A) 1 m/s
B) 
m/s
Which of the bodies given below has less kinetic energy when both have the same mass?
A) 1 m/s
B) m/s
PhysicsGrade-7
Physics
Which of the bodies given below has more kinetic energy when both have the same mass?
A) 2m/s
B) 4m/s
Which of the bodies given below has more kinetic energy when both have the same mass?
A) 2m/s
B) 4m/s
PhysicsGrade-7
Physics
Which of the following statements is correct for the graph between kinetic energy and velocity of the body?
Which of the following statements is correct for the graph between kinetic energy and velocity of the body?
PhysicsGrade-7
Physics
What kind of graph is the graph between kinetic energy and velocity of the body?
What kind of graph is the graph between kinetic energy and velocity of the body?
PhysicsGrade-7
Physics
As velocity decreases, kinetic energy
As velocity decreases, kinetic energy
PhysicsGrade-7
