Two firefighters are trying to break through a door. One firefighter is heavy, and the other is light. If they run at the same speed, which one is more likely to break through? Explain.

Generally, more massive objects will have more intertia than less massive objects. As such it takes more force to halt a more massive object if its moving at the same speed as a smaller object. This can also be thought of in the context of Newton's second law. The more force needed to accelerate an object means the more force the object will have.

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onyebuchinnaji onyebuchinnaji · Answer 2 · 2021-10-19T15:43:22+02:00

At equal speed, the firefighter with more weight will have more momentum and exact more force which will cause breakthrough.

According to Newton's second law of motion, the force applied to an object is directly proportional to the product of mass and acceleration of the object.

F = ma

Acceleration is the change in velocity per change in time of motion.

The law can also be written as;

[tex]F = ma = \frac{mv}{t}[/tex]

Also, momentum is given as the product of mass and velocity.

P = mv

Thus, at equal speed, the firefighter with more weight will have more momentum and exact more force which will cause breakthrough.

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