Question

explain that first law of motion is contained in second law of motion

Answer 1

"Newton's First Law of Motion states that a body at rest will remail at rest unless an outside force acts on it, and body in motion at a constant velocity will remain in motion ins straight line unless acted upon by an out side force .... outside forces are some times called net forces or unbalanced forces

Answer 2

Answer:

Explanation:

Newton's First law of motion is also called as law of Inertia.

It states that " every object which is at rest  or uniform motion  continues to be at the state of rest or in uniform motion unless it is compelled to change its state by action external net force."

Example :

1. When a driver applies a sudden break to a moving bus, the passenger tries to lean forward

explanation :

   When bus is in motion, Passenger is also in the state of motion.

   When driver applies sudden break, passenger leans forward because his legs which are in contact with bus comes to rest immediately but his upper part of body tries to be in motion  due to inertia of motion .

   Hence due to inertia of motion, he leans forward.