Answer:
True
Step-by-step explanation:
Newtons Law states that "When a net force acts on a body, it produces acceleration in the body in the direction of the net force. The magnitude of acceleration is directly proportional to the net force and inversely proportional to its mass."
So, it's mathematical form is
=> a ∝ F (1)
=> a ∝

Combining the proportionality
=> a ∝

=> F ∝ ma
Using k as proportionality constant.
=> F = kma
Here k = 1
=> F = ma (Proved)