Force & Motion

Question 1

Newton’s First Law of Motion

Answer 1

Newton’s First Law of Motion, also known as the Law of Inertia, is a fundamental principle that describes the behaviour of objects in the absence of external influences. The term “Law of Inertia” emphasizes the concept of inertia, which refers to the property of massive objects to resist changes in their state of motion. This idea stems from the observation that objects naturally maintain their current state of rest or motion, resisting any changes unless acted upon by an external force.

an object is at rest or in uniform motion, it will continue in that stat

Question 2

is acc and force always in the same dircetion \g
give examples?

Answer 2

yes the acc is always in direction of the net force

Question 2

Newton’s Second Law of Motion

Answer 2

This equation reveals that the acceleration of an object is directly proportional to the magnitude of the net force applied in the same direction as the force and inversely proportional to the object’s mass.

F = m x a

Question 3

how does the velocity at the highest point zero?

Answer 3

Yes, due to -ve acceleration along vertical direction velocity keep on decreasing and at the highest it becomes zero.

Question 3

how is the dirc of the velocity during projectile motion?

Answer 3

The direction of the velocity is ALWAYS in the direction that an object is moving. The vertical component of velocity is either upward or downward depending on whether the projectile is rising towards its peak or falling from its peak. At the peak itself, the vertical velocity is momentarily 0 m/s.