Question

13.a delivery driver pushes a cart full of packages up a ramp. as he pushes, the wheels roll, but he has to lean into it to keep it moving. explain 2 of the forces acting on the cart in this situation. then, analyze how each force affects the motion of the cart.

Explanation:

1. Gravitational force: Pulls the cart downwards towards the Earth. It affects the normal force and the friction. If the incline is steeper, the component of gravitational force along the incline increases, making it harder to push the cart up.
2. Applied force: The delivery - driver applies a force to push the cart up the incline. This force counteracts the component of gravitational force acting down the incline and any frictional force. If the applied force is greater than the sum of the opposing forces, the cart moves up the incline.

Answer:

1. Gravitational force: Pulls the cart downwards, affects the difficulty of pushing up the incline.
2. Applied force: Pushes the cart up the incline, counteracts opposing forces.