What is true about the forces on a car stopped at a red light?(1 point)
The forces on a car stopped at a red light are balanced and the net force on the car is zero.
Is this right?
Yes, that is correct. When a car is stopped at a red light, the forces acting on it, such as gravity and the normal force from the ground, are balanced. As a result, the net force on the car is zero.
A book rests on a table inside a house. What forces are acting on the book to keep it at rest?(1 point)
The forces acting on the book to keep it at rest are the force of gravity pulling the book downward and the normal force exerted by the table pushing upward. These two forces are equal in magnitude and opposite in direction, resulting in a net force of zero and keeping the book at rest.
Which item has unbalanced forces acting on it?(1 point)
Responses
Without specific items listed to choose from, it is not possible to determine which item has unbalanced forces acting on it. Please provide a list of items to choose from.
a tall bridge over a river
a tall bridge over a river
a car parked in a garage
a car parked in a garage
heavy books stacked on a table
heavy books stacked on a table
water turning a waterwheel
The water turning a waterwheel has unbalanced forces acting on it. As the flowing water pushes against the waterwheel, it exerts a force on the wheel, causing it to rotate. This rotation creates an unbalanced force on the waterwheel, allowing it to do work by converting the flow of water into mechanical energy.
What is true about the forces on a car stopped at a red light?(1 point)
Only gravity acts on the car because it is at rest.
Only gravity acts on the car because it is at rest.
The forces acting on the car are equal because it is at rest.
The forces acting on the car are equal because it is at rest.
There are no forces acting on the car because it is at rest.
There are no forces acting on the car because it is at rest.
The forces acting on the car are unequal because it is at rest.