Physics
Grade-7
Easy
Question
Direction : Is this an example of kinetic energy?
Stretched rubber band
- Yes
- No
Hint:
No
The correct answer is: No
When you stretch a rubber band the energy transferred is stored in the form of potential energy. When elastic is stretched its loaded with potential energy while only when it is released there is a shift in kinetic energy.
A rubber band that is stretched has elastic potential energy, because when released, the rubber will spring back to its resting state, transferring the potential energy to kinetic energy in the process.
Related Questions to study
Physics
Direction : Is this an example of kinetic energy?
Motion of a meteor
- Yes
- No
Direction : Is this an example of kinetic energy?
Motion of a meteor
PhysicsGrade-7
- Yes
- No
Physics
Kinetic energy and velocity are related as
Kinetic energy and velocity are related as
PhysicsGrade-7
Physics
Kinetic energy and mass are related as
Kinetic energy and mass are related as
PhysicsGrade-7
Physics
Identify the correct formula for calculating kinetic energy.
- KE = 2mv
Identify the correct formula for calculating kinetic energy.
PhysicsGrade-7
- KE = 2mv
Physics
The SI unit of kinetic energy is ______.
- Kg m/s
- Kg m2/s
- Kg m2/s2
- Kg s/m
The SI unit of kinetic energy is ______.
PhysicsGrade-7
- Kg m/s
- Kg m2/s
- Kg m2/s2
- Kg s/m
Physics
Kinetic energy is defined as
- The energy of a body due to its motion
- The energy of a body due to its mass
- The energy of a body due to its position
- The energy of a body due to its shape
Kinetic energy is defined as
PhysicsGrade-7
- The energy of a body due to its motion
- The energy of a body due to its mass
- The energy of a body due to its position
- The energy of a body due to its shape
Physics
What is the new kinetic energy of a body of mass m, moving at a velocity, v, when its velocity becomes 5 v
- 5KE
KE
- 25 KE
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
- 5KE
KE
- 25 KE
Physics
What is the new kinetic energy of a body of mass m, moving at a velocity, v, when its velocity becomes v/3
- 3KE
- 9KE
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
- 3KE
- 9KE
Physics
What is the new kinetic energy of a body of mass m, moving at a velocity, v, when its velocity becomes 3 v
- 3KE
- 9KE
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
- 3KE
- 9KE
Physics
Which of the bodies given below has more kinetic energy when mass is constant?
A) 3 m/s
B) 6 m/s
- 3m/s
- 6m/s
- Both A and B
- None
Which of the bodies given below has more kinetic energy when mass is constant?
A) 3 m/s
B) 6 m/s
PhysicsGrade-7
- 3m/s
- 6m/s
- Both A and B
- None
Physics
Velocity is ____ proportional to the kinetic energy.
- Directly
- Inversely
- Initially directly and then inversely
- Initially inversely and then directly
Velocity is ____ proportional to the kinetic energy.
PhysicsGrade-7
- Directly
- Inversely
- Initially directly and then inversely
- Initially inversely and then directly
Physics
What can you say about the kinetic energy when both have the same mass?
A) 2 m/s
B)
m/s
- KEA ≥ KEB
What can you say about the kinetic energy when both have the same mass?
A) 2 m/s
B)
m/s
PhysicsGrade-7
- KEA ≥ KEB
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
- A
- B
- A & B
- None
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
- A
- B
- A & B
- None
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
- A
- B
- A & B
- None
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
- A
- B
- A & B
- None
Physics
Which of the bodies given below has less kinetic energy when both have the same mass?
A) 1 m/s
B)
m/s
- A
- B
- A & B
- None
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
- A
- B
- A & B
- None