Physics
Grade-10
Easy
Question
A ball weighing 0.5 kg has a kinetic energy of 1 joule when its speed is:
- 1 m/s
- 2 m/s
- 3 m/s
- 4 m/s
Hint:
Kinetic energy can be calculated by 
mv2
The correct answer is: 2 m/s
Given:
Mass of the ball = 0.5 kg
Kinetic energy = 1 J
To find:
Speed of the ball =?
Solution:
Hence the speed of the ball is 2 ms-1
Related Questions to study
Physics
If the stone is thrown up vertically and returned to the ground, its potential energy is maximum:
If the stone is thrown up vertically and returned to the ground, its potential energy is maximum:
PhysicsGrade-10
Physics
An object is dropped from a certain height. Which of the following statements is correct about the object when it is at the highest position?
An object is dropped from a certain height. Which of the following statements is correct about the object when it is at the highest position?
PhysicsGrade-10
Physics
When the speed of the moving object is doubled its:
When the speed of the moving object is doubled its:
PhysicsGrade-10
Physics
The kinetic energy of the body depends:
The kinetic energy of the body depends:
PhysicsGrade-10
Physics
The mechanical energy of a system is equal to _____.
The mechanical energy of a system is equal to _____.
PhysicsGrade-10
Physics
The energy possessed by a person on a roller coaster ride is:
The energy possessed by a person on a roller coaster ride is:
PhysicsGrade-10
Physics
Two masses m and 2m are dropped from a certain height ‘h’. Then on reaching the ground,
Two masses m and 2m are dropped from a certain height ‘h’. Then on reaching the ground,
PhysicsGrade-10
Physics
A ball is thrown vertically upwards. Its velocity keeps on decreasing. What happens to its kinetic energy when it reaches the maximum height?
A ball is thrown vertically upwards. Its velocity keeps on decreasing. What happens to its kinetic energy when it reaches the maximum height?
PhysicsGrade-10
Physics
Calculate the kinetic energy of a body of mass 2 kg moving with a velocity of 0.1 meters per second.
Calculate the kinetic energy of a body of mass 2 kg moving with a velocity of 0.1 meters per second.
PhysicsGrade-10
Physics
When an apple falls from a tree toward the earth, then its total energy.
When an apple falls from a tree toward the earth, then its total energy.
PhysicsGrade-10
Physics
An object of 10 kg moves with a uniform velocity of 2 m/s; what is the kinetic energy possessed by the object?
An object of 10 kg moves with a uniform velocity of 2 m/s; what is the kinetic energy possessed by the object?
PhysicsGrade-10
Physics
A man of mass of 50 kg jumps to a height of 1 m. His potential energy at the highest point is (g = 10 m/s2):
A man of mass of 50 kg jumps to a height of 1 m. His potential energy at the highest point is (g = 10 m/s2):
PhysicsGrade-10
Physics
A ball is dropped from a height:
A ball is dropped from a height:
PhysicsGrade-10
Physics
When a rubber band is stretched and then released, what form of energy does it have?
When a rubber band is stretched and then released, what form of energy does it have?
PhysicsGrade-10
Physics
According to the law of conservation of energy:
According to the law of conservation of energy:
PhysicsGrade-10
