Book 2 (Newton’s Laws)

Question 1

FORCE

Answer 1

• a vector which has both magnitude and direction.
• an applied force acting on a body can be shown by drawing a force diagram.

Question 2

How to find resultant of two forces?

Answer 2

Resultant force = net force = unbalanced force
—> the vector sum of two forces
Calculation:
MAX resultant force F : two forces are in the same direction
MIN resultant force F: two forces are on opposite directions
Forces make an angle x, the resultant force F is the diagonal of the parallelogram
Perpendicular force: use Pyth. Theorem