Physics
Grade-7
Easy
Question
What is the new kinetic energy of a body of mass m, moving at a velocity, v, when its velocity becomes v/4
- 16 KE
- 4 KE
Hint:
The kinetic energy is determined when the mass is m and the velocity is v/4.
The correct answer is:
- Kinetic energy is defined to be directly proportional to the mass of an object and the square of its velocity.
Related Questions to study
Physics
Direction : What is the new kinetic energy of an object of mass m when its mass becomes
3 m
Direction : What is the new kinetic energy of an object of mass m when its mass becomes
3 m
PhysicsGrade-7
Physics
Which one of the two bodies shown below has more kinetic energy when velocity is constant?
Which one of the two bodies shown below has more kinetic energy when velocity is constant?
PhysicsGrade-7
Physics
Identify the odd one out.
Identify the odd one out.
PhysicsGrade-7
Physics
Kinetic energy is
Kinetic energy is
PhysicsGrade-7
Physics
Mass is ____ proportional to the kinetic energy.
Mass is ____ proportional to the kinetic energy.
PhysicsGrade-7
Physics
What is the mass of the dark blue-colored car?
What is the mass of the dark blue-colored car?
PhysicsGrade-7
Physics
What is the value of the kinetic energy when the velocity of the object is
100 km/h for the green car (first graph from top)
What is the value of the kinetic energy when the velocity of the object is
100 km/h for the green car (first graph from top)
PhysicsGrade-7
Physics
Which one of the two masses shown below has less kinetic energy when both have the same speed?
Which one of the two masses shown below has less kinetic energy when both have the same speed?
PhysicsGrade-7
Physics
What is the value of the kinetic energy when the velocity of the object is
80 km/h for LIGHT blue car (second line from top)
What is the value of the kinetic energy when the velocity of the object is
80 km/h for LIGHT blue car (second line from top)
PhysicsGrade-7
Physics
Which one of the two masses shown below has more kinetic energy when both have the same speed?
Which one of the two masses shown below has more kinetic energy when both have the same speed?
PhysicsGrade-7
Physics
What is the value of the kinetic energy when the velocity of the object is
60 Km/h for the violet car (fourth line from top)
What is the value of the kinetic energy when the velocity of the object is
60 Km/h for the violet car (fourth line from top)
PhysicsGrade-7
Physics
What can you say about the kinetic energy of the two bodies shown below when both have the same speed?
What can you say about the kinetic energy of the two bodies shown below when both have the same speed?
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/5
What is the new kinetic energy of a body of mass m, moving at a velocity, v, when its velocity becomes v/5
PhysicsGrade-7
Physics
Which one of the two bodies shown below has less kinetic energy when both have the same speed?
Which one of the two bodies shown below has less kinetic energy when both have the same speed?
PhysicsGrade-7
Physics
Which one of the two bodies shown below has more kinetic energy when both have the same speed?
Which one of the two bodies shown below has more kinetic energy when both have the same speed?
PhysicsGrade-7
