Question

complete the four numbered statements below. 1. the ball starts moving because _. choose 1 answer. a the kick gives the ball inertia b the unbalanced force from the kick causes the ball to accelerate 2. the ball continues moving after leaving the players foot because _. choose 1 answer. a the ball has inertia b the applied force from the kick is still pushing the ball forward 3. the ball slows to a stop because _. choose 1 answer. a the ball gradually loses its inertia b friction and air resistance cause the ball to accelerate 4. after coming to rest, the ball remains at rest because _. choose 1 answer. a the ball has inertia b an objects natural tendency is to be at rest

Explanation:

1. According to Newton's first - law, an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. A kick is an unbalanced force that causes the ball to accelerate, so the answer is the unbalanced force from the kick causes the ball to accelerate.
2. Inertia is the property of an object to resist changes in its state of motion. After the foot leaves the ball, the ball continues moving because of its inertia.
3. Friction and air resistance are forces that act against the motion of the ball, causing it to slow down and eventually stop.
4. Once the ball comes to rest, it remains at rest because an object's natural tendency is to be at rest according to Newton's first law (in the absence of unbalanced forces).

Answer:

1. B. the unbalanced force from the kick causes the ball to accelerate
2. A. the ball has inertia
3. B. friction and air resistance
4. A. an object's natural tendency is to be at rest