Net Force and Free Body Diagrams Quiz

Calculating net force: A 50 kg object is being pushed with a force of 100 N to the right and a force of 30 N to the left. What is the net force acting on the object?

• 20 N to the left

• 50 N to the left

• 70 N to the right

• 80 N to the right

Calculating net force: An object is experiencing a force of 80 N to the right and a force of 40 N to the left. If the object has a mass of 20 kg, what is the acceleration of the object?

• 5 m/s^2

• 0.5 m/s^2

• 10 m/s^2

• 2 m/s^2

Calculating net force: If an object has a mass of 10 kg and experiences a net force of 50 N to the right, what is the acceleration of the object?

• 10 m/s^2

• 30 m/s^2

• 20 m/s^2

• 5 m/s^2

Identifying forces in free body diagrams: In a free body diagram of a book resting on a table, what are the forces acting on the book?

• Kinetic force and potential force

• Gravitational force and normal force

• Electromagnetic force and nuclear force

• Friction force and tension force

Identifying forces in free body diagrams: In a free body diagram of a car moving to the right, what are the forces acting on the car?

• Gravity, magnetism, and electricity

• Friction, air resistance, and engine force

• Tension, normal force, and kinetic energy

• Inertia, momentum, and velocity

Identifying forces in free body diagrams: In a free body diagram of a person jumping, what are the forces acting on the person?

• Gravity, normal force, air resistance/friction

• Friction, electrical force, buoyant force

• Centripetal force, potential energy, drag force

• Magnetic force, kinetic energy, tension

Balanced forces: What happens to the motion of an object when the net force acting on it is zero?

• Slows down

• Changes direction

• Remains at rest or moves at a constant velocity

• Speeds up

Balanced forces: Give an example of a situation where balanced forces are acting on an object.

• A book resting on a table

• A car accelerating uphill

• A ball rolling down a hill

• A rocket launching into space

Unbalanced forces: What happens to the motion of an object when the net force acting on it is not zero?

• The object will experience deceleration in the direction of the net force.

• The object will remain at rest.

• The object will move in the opposite direction of the net force.

• The object will experience acceleration in the direction of the net force.

Unbalanced forces: Give an example of a situation where unbalanced forces are acting on an object.

• A car accelerating on a road

• A ball rolling at a constant speed

• A book resting on a table

• A person standing still