Question

1. a car suddenly stops and the passengers lurch forward. identify the law.
2. a heavy object requires more force to accelerate than a light object. which law is this?
3. a swimmer pushes water backward and moves forward. which newtons law applies?
4. a stationary soccer ball stays still until kicked. which law explains this?

Explanation:

Question 33

When a car stops suddenly, passengers lurch forward because their bodies tend to stay in motion (due to inertia) as per Newton's First Law of Motion (Law of Inertia), which states that an object in motion stays in motion with the same velocity unless acted upon by a net external force.

The statement "A heavy object requires more force to accelerate than a light object" relates to Newton's Second Law of Motion, which is mathematically expressed as \( F = ma \) (Force equals mass times acceleration). For a given acceleration, a greater mass (heavy object) requires a greater force.

When a swimmer pushes water backward, the water exerts an equal and opposite force on the swimmer, propelling them forward. This is consistent with Newton's Third Law of Motion, which states that for every action, there is an equal and opposite reaction.

Answer:

Newton's First Law of Motion (Law of Inertia)

Question 34