Class 9 Science: Force and Laws of Motion Worksheet

Which of the following describes the tendency of an object to resist changes in its state of motion?

The SI unit of force is the ____.

According to Newton's first law of motion, an object at rest will remain at rest, and an object in motion will remain in motion with the same velocity, unless acted upon by a(n) ____.

Define inertia. Give one example.

Newton's second law of motion states that the rate of change of momentum of an object is proportional to the ____.

A rocket works on the principle of Newton's ____ law of motion.

If a force of 10 N acts on an object of mass 2 kg, what is the acceleration produced?

Why is it advisable to wear a seatbelt while driving?

The product of mass and velocity is called ____.

When a gun is fired, the bullet moves forward and the gun recoils backward. This phenomenon demonstrates which of Newton's laws?