Which example shows an object acted on by two balanced forces?(1 point)%0D%0AResponses%0D%0A%0D%0AA baseball rolling to a stop%0D%0AA baseball rolling to a stop%0D%0A%0D%0AA car moving at a constant speed in a constant direction%0D%0AA car moving at a constant speed in a constant direction%0D%0A%0D%0AA snowflake landing on a roof%0D%0AA snowflake landing on a roof%0D%0A%0D%0AA skateboard rolling down a hill with increasing speed
A car moving at a constant speed in a constant direction is an example that shows an object acted on by two balanced forces.
The example that shows an object acted on by two balanced forces is a car moving at a constant speed in a constant direction.
To determine which example shows an object acted on by two balanced forces, we need to understand what balanced forces are. Balanced forces occur when the net force acting on an object is zero, meaning that the forces are equal in size and opposite in direction. In this case, we need to identify an example where two forces are acting on an object, and these forces are balanced.
Let's examine the given options:
1. A baseball rolling to a stop: In this scenario, the force of friction opposes the motion of the baseball, gradually bringing it to a stop. However, there is only one force acting on the baseball, so it doesn't demonstrate two balanced forces.
2. A car moving at a constant speed in a constant direction: When a car moves at a constant speed in a constant direction, the forces acting on it are typically balanced. The force of the engine propels the car forward, while the force of friction opposes this motion. These two forces are balanced because the car maintains a constant speed. Therefore, this example demonstrates an object acted on by two balanced forces.
3. A snowflake landing on a roof: In this scenario, the snowflake is subject to the force of gravity pulling it downward and the force of air resistance acting against its motion. However, these forces are not balanced because the snowflake accelerates due to the unbalanced force of gravity. Therefore, this example does not show an object acted on by two balanced forces.
4. A skateboard rolling down a hill with increasing speed: As the skateboard rolls down the hill, it experiences the force of gravity pulling it downward and the force of friction opposing its motion. These forces are not balanced because the skateboard is accelerating due to the unbalanced force of gravity. Therefore, this example does not demonstrate an object acted on by two balanced forces.
Based on the analysis, the example that shows an object acted on by two balanced forces is: "A car moving at a constant speed in a constant direction."