Which example shows an object acted on by two balanced forces?(1 point)
Responses
A baseball rolling to a stop
A baseball rolling to a stop
A car moving at a constant speed in a constant direction
A car moving at a constant speed in a constant direction
A snowflake landing on a roof
A snowflake landing on a roof
A skateboard rolling down a hill with increasing speed
A car moving at a constant speed in a constant direction
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 two forces acting on an object are equal in magnitude and opposite in direction. When forces are balanced, the object experiences no acceleration and remains stationary or continues to move at a constant speed in a constant direction.
Let's analyze each of the examples given:
A baseball rolling to a stop: In this scenario, the force of friction acts in the opposite direction to the motion, but eventually brings the baseball to a stop. This indicates an unbalanced force, as the force of friction is greater than the force applied to keep the baseball rolling. Therefore, this example does not show an object acted on by two balanced forces.
A car moving at a constant speed in a constant direction: In this situation, the forces acting on the car include the force of the engine moving the car forward and the opposing forces like air resistance, friction, and gravity. When these forces are balanced, the car continues to move at a constant speed without any change in direction. Therefore, this example does show an object acted on by two balanced forces.
A snowflake landing on a roof: When a snowflake lands on a roof, it typically experiences only the force of gravity acting downwards. Since this force is balanced and opposite to the force exerted by the roof, this example does show an object acted on by two balanced forces.
A skateboard rolling down a hill with increasing speed: In this case, the force of gravity acts on the skateboard, causing it to accelerate down the hill. The force of gravity is not balanced by any opposing force, so this example does not show an object acted on by two balanced forces.
Therefore, the correct answer is: A car moving at a constant speed in a constant direction.