When a net force acts on an object, we observe that the object accelerates: Class 9

When a net force acts on an object, we observe that the object accelerates: Class 9

Question 1.

When a net force acts on an object, we observe that the object accelerates: Class 9

(i) opposite to the direction of force, with acceleration proportional to the force acting on the object.

(ii) opposite to the direction of force, with acceleration proportional to the mass of the object.

(iii) in the direction of force, with acceleration inversely proportional to the force acting on the object.

(iv) in the direction of force, with acceleration proportional to the force acting on the object.

Answer:

(iv) in the direction of force, with acceleration proportional to the force acting on the object.

By Newton's second law, F = ma, so a = F/m. The acceleration is in the direction of the net force, and is directly proportional to the net force (for fixed mass).