Resultant Force Quiz

What is the definition of resultant force? Formula/Guidance: The resultant force is the single force that has the same effect as all the forces acting on an object combined.

How is the resultant force calculated when two forces act on an object in the same direction? Formula/Guidance: When forces act in the same direction, the resultant force is the sum of the forces: Fresultant=F1+F2F_{\text{resultant}} = F_1 + F_2Fresultant​=F1​+F2​.

How is the resultant force calculated when two forces act on an object in opposite directions? Formula/Guidance: When forces act in opposite directions, the resultant force is the difference between the larger and smaller forces: Fresultant=Flarger−FsmallerF_{\text{resultant}} = F_{\text{larger}} - F_{\text{smaller}}Fresultant​=Flarger​−Fsmaller​.

What does a negative resultant force indicate? Formula/Guidance: A negative resultant force means the net force acts in the opposite direction to the direction assumed positive.

Two people are pushing a box with forces of 5 N and 10 N, respectively, in the same direction. What is the resultant force acting on the box? Formula/Guidance: When forces act in the same direction, the resultant force is the sum of the forces: Fresultant=F1+F2F_{\text{resultant}} = F_1 + F_2Fresultant​=F1​+F2​.

A rope is being pulled by two teams in a tug of war. Team A pulls to the right with a force of 100 N, and Team B pulls to the left with a force of 80 N. What is the magnitude and direction of the resultant force? Formula/Guidance: For forces in opposite directions: Fresultant=Flarger−FsmallerF_{\text{resultant}} = F_{\text{larger}} - F_{\text{smaller}}Fresultant​=Flarger​−Fsmaller​.

If an object is subject to a resultant force of zero, what can be said about its motion? Formula/Guidance: When the resultant force is zero, the object is either at rest or moving at a constant velocity according to Newton's First Law.

Which of the following is an example of a situation where resultant force is important to consider? Formula/Guidance: The resultant force is critical in analyzing motion, stability, and the effect of forces in various scenarios.

In a free-body diagram, how are forces represented? Formula/Guidance: In free-body diagrams, forces are represented by arrows that show the magnitude (length) and direction of each force.

How does the concept of resultant force relate to Newton's First Law of Motion? Formula/Guidance: Newton's First Law states that an object will remain at rest or in uniform motion unless acted upon by a resultant force.

A boat is moving forward with a force of 100 N from the motor and experiencing a resistive force of 20 N from the water. What is the resultant force acting on the boat? Formula/Guidance: For forces in opposite directions: Fresultant=Flarger−FsmallerF_{\text{resultant}} = F_{\text{larger}} - F_{\text{smaller}}Fresultant​=Flarger​−Fsmaller​.

A book is resting on a table. The weight of the book is acting downwards. What force is balancing the weight, resulting in a zero resultant force? Formula/Guidance: For an object at rest, the forces acting on it must balance each other, resulting in zero resultant force.

Three forces are acting on an object: 5 N to the right, 8 N to the left, and 2 N to the right. What is the magnitude and direction of the resultant force? Formula/Guidance: Add forces in the same direction and subtract opposing forces: Fright=5 N+2 N=7 N; Fresultant=8 N (left)−7 N (right)=1 N (left)F_{\text{right}} = 5 \, \text{N} + 2 \, \text{N} = 7 \, \text{N}; \, F_{\text{resultant}} = 8 \, \text{N (left)} - 7 \, \text{N (right)} = 1 \, \text{N (left)}Fright​=5N+2N=7N;Fresultant​=8N (left)−7N (right)=1N (left).

A skydiver is falling through the air. What force opposes gravity, eventually leading to a constant velocity? Formula/Guidance: The force opposing gravity during free fall is air resistance, which increases with speed until it equals the gravitational force.

Two teams are playing tug of war. The resultant force on the rope is 10 N to the left. What does this tell us about the forces applied by the two teams? Formula/Guidance: If the resultant force is to the left, the force applied by the left team is greater than that of the right team by 10 N10 \, \text{N}10N.