Which situation describes a non-contact force changing the speed of an object?
a a bicycle accelerating as the rider pedals more quickly
b a drawer opening when a user pulls the handle
c a gust of wind blowing a leaf away
d a ball of accelerating as it rolls down a hill
c a gust of wind blowing a leaf away
The situation that describes a non-contact force changing the speed of an object is:
c) a gust of wind blowing a leaf away.
The situation that describes a non-contact force changing the speed of an object is option c, a gust of wind blowing a leaf away.
To identify the non-contact force in each situation, we need to understand that a non-contact force is a force that acts on an object without it physically touching another object. In options a, b, and d, the forces involved require direct contact with the object or involve physical interaction between two objects. However, in option c, the force of the gust of wind acts on the leaf without direct contact.
When a gust of wind blows on a leaf, it applies a force to the leaf, causing it to accelerate and change its speed. The force of the wind pushes the leaf, causing it to move in the direction of the wind and change its speed.
To determine the correct answer, it is essential to analyze the scenarios and understand the concept of non-contact forces.