Force and Acceleration Concepts

This video tutorial covers the topic of force, starting with its definition as the rate of change of momentum and its nature as a vector quantity. It explains the SI unit of force and introduces Newton's second law, which relates force, mass, and acceleration. The tutorial provides examples to illustrate these concepts, including practical applications and quantitative problems. It concludes with advanced applications of force and a summary of key points.

What is the SI unit of force?

• Newton

• Joule

• Watt

• Pascal

How is force defined in terms of momentum?

• As the product of mass and velocity

• As the rate of change of momentum

• As the rate of change of velocity

• As the product of mass and acceleration

According to Newton's Second Law, what is the relationship between force and acceleration?

• Acceleration is inversely proportional to force

• Acceleration is directly proportional to force

• Force is directly proportional to velocity

• Force is inversely proportional to mass

What happens to the acceleration of a truck if its mass is increased?

• Acceleration becomes zero

• Acceleration increases

• Acceleration decreases

• Acceleration remains constant

Which of the following actions can increase a truck's acceleration?

• Decreasing the applied force

• Increasing the truck's mass

• Decreasing the load on the truck

• Increasing the load on the truck

If a 0.2 kg object is pulled with a force of 8 N, what is its acceleration?

• 20 m/s²

• 40 m/s²

• 4 m/s²

• 16 m/s²

What formula is used to calculate force when mass and acceleration are known?

• F = m+v

• F = ma

• F = mv

• F = m/a

An object changes its velocity from rest to 25 m/s in 5 seconds. What is the acceleration?

• 50 m/s²

• 25 m/s²

• 10 m/s²

• 5 m/s²

What is the magnitude of force required to accelerate a 50 kg object at 5 m/s²?

• 100 N

• 150 N

• 200 N

• 250 N

If the velocity of an object increases from U to V in time T, which formula relates force to this change?

• F = mT/(V-U)

• F = m(V-U)/T

• F = (V+U)/T

• F = (V-U)/T