Physics
Why are seat belts important in vehicles? Which law of motion explains their importance?
Answer
Seat belts are important because they prevent passengers from being thrown forward when a vehicle stops suddenly. When the vehicle stops, the body of the passenger tends to continue moving forward due to inertia of motion so the seat belt holds the passenger firmly and prevents injury.
This is explained by Newton’s First Law of Motion (law of inertia).
Related Questions
Distinguish between mass and weight.
Explain the meaning of the following statement '1 kgf = 9.8 N'.
The force of attraction between two bodies at a certain separation is 10 N. What will be the force of attraction between them if the separation is reduced to half ?
Write the approximate weight of a body of mass 5 kg. What assumption have you made ?