The video tutorial covers the concept of force in physics, explaining it as a push or pull that causes motion. It distinguishes between contact and distance forces, such as gravitational and magnetic forces. The tutorial outlines the effects of force, including setting objects in motion, stopping them, changing their speed, direction, and shape. It discusses balanced and unbalanced forces, emphasizing the role of friction. The video also explains how force is measured using units like Newtons and instruments like spring balances, and it derives the formula for force using Newton's second law of motion.

How is force defined in physics?

• As a unitless quantity

• As a constant value

• As a vector quantity

• As a scalar quantity

Which of the following is an example of a force at a distance?

• Kicking a ball

• Gravitational force

• Pulling a rope

• Pushing a door

What effect does force have on a stationary object?

• It can set it into motion

• It can make it heavier

• It can make it disappear

• It can change its color

Which of the following is NOT an effect of force?

• Changing the direction of an object

• Changing the color of an object

• Changing the shape of an object

• Changing the speed of an object

What happens when balanced forces act on an object?

• The object remains in uniform motion

• The object changes direction

• The object explodes

• The object accelerates

What role does friction play in motion?

• It speeds up objects

• It stops objects

• It makes objects heavier

• It changes the color of objects

What is the SI unit of force?

• Dyne

• Newton

• Watt

• Joule

How is force calculated using mass and acceleration?

• F = m / a

• F = a / m

• F = m + a

• F = m * a

What is the conversion factor from Newtons to Dynes?

• 1 Newton = 100000 Dynes

• 1 Newton = 10000 Dynes

• 1 Newton = 1000 Dynes

• 1 Newton = 100 Dynes

What instrument is used to measure force?

• Voltmeter

• Thermometer

• Barometer

• Spring balance