3. Give one
example of forces acting in
in same direction
and forces in
opposite dinection
Answers
Answer:
when we hit the punching bag
Answer:
When a body is moving, all forces produce work. It may be negative, positive or null. Suppose we’re both pushing a huge box from the opposite sides: since you’re probably stronger than me, the box will move in my direction. However, I am still applying a force. My force and the displacement go in opposite directions, so my work is negative. The same thing happens with friction: it goes against the movement, and it’s a force, so the work it does is negative.
Unbalanced forces cause a change in motion, speed, and/or direction. When two forces act in the same direction on an object, the net force is equal to the sum of the two forces. In the example below, the net force would be 900 Newtons (450 + 450 = 900), and the object would move to the right.
Explanation: