Forces and Resultant Forces

What is a force?

• A push or pull that acts on an object

• The interaction between two objects

• The size of an object

• The direction of an object

How can resultant forces be calculated?

• By adding all the forces together

• By subtracting the smaller force from the larger force

• By multiplying the forces

• By dividing the forces

In the example of a man pushing a box, what is the resultant force?

• 20 Newtons to the right

• 10 Newtons to the left

• 30 Newtons to the right

• 10 Newtons to the right

What is the resultant force in the case of a car traveling along a road?

• 10,000 Newtons to the left

• 4,000 Newtons to the right

• 5,000 Newtons to the right

• 1,000 Newtons to the left

When does the resultant force become zero?

• When all the forces are acting in the same direction

• When all the forces are acting in opposite directions

• When there are no forces acting on an object

• When the forces are unbalanced

What is the force that acts against a car's motion?

• Driving force

• Friction force

• Air resistance

• Resultant force

What is the force that keeps an airplane at a constant altitude?

• Weight

• Lift

• Drag

• Thrust

What is the force provided by the airplane's engines?

• Weight

• Lift

• Drag

• Thrust

What is the force experienced by an airplane moving at a constant velocity?

• Weight

• Lift

• Drag

• Thrust