Question

name
directed reading for
content mastery
overview
force and newtons laws
directions: complete the concept map using the phrases listed below.
the direction of the force a net force an equal but opposite reaction
directions: in the space provided, write the number for newtons law of motion that best applies to the
conditions described.

1. a golf ball is motionless until it is hit by a golf club.
2. the golf club is swung in a northerly direction, and that is the direction

the ball travels.

1. when hit, the golf ball pushes back on the club with the same amount

of force that the club exerts on the ball.
force and newtons laws 19

Explanation:

• For the concept map:
• Newton's first law states that an object at rest or moving at constant speed in a straight path will continue to do so until acted upon by a net force. So, 1. is “a net force”.
• Newton's second law states that an object acted upon by a net force will accelerate in the direction of the force. So, 2. is “the direction of the force”.
• Newton's third law states that for every action there is an equal but opposite reaction. So, 3. is “an equal but opposite reaction”.
• For the numbered conditions:
• A golf ball is motionless until it is hit by a golf club. This is an example of Newton's first law (an object at rest stays at rest until a force acts on it). So, 4. is 1.
• The golf club is swung in a northerly direction, and that is the direction the ball travels. This relates to Newton's second law (force causes acceleration in the direction of the force). So, 5. is 2.
• When hit, the golf ball pushes back on the club with the same amount of force that the club exerts on the ball. This is in line with Newton's third law (action - reaction). So, 6. is 3.

Answer:

1. a net force; 2. the direction of the force; 3. an equal but opposite reaction; 4. 1; 5. 2; 6. 3