Suppose that a cart is moving along a road at a constant velocity. Give two examples of ways to cause the cart to decelerate, explaining how the net force is affected.(2 points)
NO PLAGURISM
Example 1: Applying brakes - By applying brakes to the cart, friction is increased between the wheels and the road surface. This increase in friction generates a backward force that opposes the motion of the cart, causing it to decelerate. The net force acting on the cart is now in the opposite direction of its velocity, resulting in deceleration.
Example 2: Increasing air resistance - If an external force, such as a parachute or a large cardboard panel, is suddenly deployed behind the cart while it is moving, it increases the air resistance acting on the cart. With a higher air resistance, the backward force generated by the resistance opposes the motion of the cart, causing it to decelerate. The net force acting on the cart is now in the opposite direction of its velocity, resulting in deceleration.