Physics
Grade-8
Easy
Question
Is this statement true or false?
acceleration can be non-zero only if there is a net external force on the body.
- True
- False
Hint:
True
The correct answer is: True
TRUE
The first law of motion can, therefore, be simply expressed as: If the net external force on a body is zero, its acceleration is zero. Acceleration can be non zero only if there is a net external force on the body. Two kinds of situations are encountered in the application of this law in practice.
Related Questions to study
Physics
Who proved Aristotle wrong by using concept shown in the following diagram?
Who proved Aristotle wrong by using concept shown in the following diagram?
PhysicsGrade-8
Physics
Sonam wrote these points.
A) They cause a change in the speed and position of an object.
B) They are not equal in magnitude.
C) They cause a change in the shape and the size of an object.
D) She forgot to write the heading. Choose an apt heading for the same.
Sonam wrote these points.
A) They cause a change in the speed and position of an object.
B) They are not equal in magnitude.
C) They cause a change in the shape and the size of an object.
D) She forgot to write the heading. Choose an apt heading for the same.
PhysicsGrade-8
Physics
An object experiences force from different directions. There is a change in the shape of the object. Force experience is a
An object experiences force from different directions. There is a change in the shape of the object. Force experience is a
PhysicsGrade-8
Physics
Identify the incorrect statement.
Identify the incorrect statement.
PhysicsGrade-8
Physics
What is the unit of force?
What is the unit of force?
PhysicsGrade-8
Physics
Inertia has no units. This statement is ___.
Inertia has no units. This statement is ___.
PhysicsGrade-8
Physics
A water tank filled with water to half its capacity is kept on a truck that is moving with constant velocity in the North direction. The driver applies a sudden break, the water in the tank would ____.
A water tank filled with water to half its capacity is kept on a truck that is moving with constant velocity in the North direction. The driver applies a sudden break, the water in the tank would ____.
PhysicsGrade-8
Physics
The mass of a man is 5 Kg and the mass of a stone is 65Kg. Which of the two has greater inertia?
The mass of a man is 5 Kg and the mass of a stone is 65Kg. Which of the two has greater inertia?
PhysicsGrade-8
Physics
People sitting in a moving bus experience a jerk when the bus stops. This is due to ____.
People sitting in a moving bus experience a jerk when the bus stops. This is due to ____.
PhysicsGrade-8
Physics
The law of inertia follows?
The law of inertia follows?
PhysicsGrade-8
Physics
Which of the following has the smallest inertia?
Which of the following has the smallest inertia?
PhysicsGrade-8
Physics
Which of the following has the largest inertia?
Which of the following has the largest inertia?
PhysicsGrade-8
Physics
As the mass of an object increases, inertia ____.
The more mass, the more inertia
As the mass of an object increases, inertia ____.
PhysicsGrade-8
The more mass, the more inertia
Physics
Mass is solely dependent upon the ____ of an object.
Mass is solely dependent upon the ____ of an object.
PhysicsGrade-8
Physics
What was concluded from the observation of the following experiment?
What was concluded from the observation of the following experiment?
PhysicsGrade-8
