Physics Fundamentals

What is the result of adding two vectors pointing in the same direction?

• The result is a vector with a magnitude equal to the difference of the magnitudes of the two original vectors

• The result is a scalar quantity

• The result is a vector with a magnitude equal to the sum of the magnitudes of the two original vectors, still pointing in the same direction.

• The result is a vector pointing in the opposite direction

Name one type of force that acts at a distance.

• Gravitational force

• Frictional force

• Electromagnetic force

• Nuclear force

What is the work done when a force is applied to an object but it doesn't move?

• No work is done

• The object gains energy

• Work is done but not calculated

• The force is not applied

How is torque calculated?

• Torque = Power x Time

• Torque = Force x Distance

• Torque = Work / Time

• Torque = Mass x Acceleration

In which condition are forces considered to be in equilibrium?

• When the forces are unbalanced

• When the forces are parallel

• When the vector sum of all forces acting on an object is zero

• When the forces are perpendicular

When adding two vectors, what is the result if they are perpendicular to each other?

• The result is always zero.

• The result is the dot product of the two vectors.

• The result is the magnitude of the hypotenuse formed by the two vectors.

• The result is the sum of the magnitudes of the two vectors.

Give an example of a contact force.

• Sliding a pencil on a desk

• Pulling a chair across the room

• Lifting a heavy box

• Pushing a book on a table

What is the unit of work?

• joules (J)

• meters (m)

• newtons (N)

• watts (W)

What is the formula for calculating torque?

• Torque = Pressure x Area

• Torque = Work / Time

• Torque = Mass x Acceleration

• Torque = Force x Distance

What is the net force on an object in equilibrium?

• Negative

• Positive

• Zero

• Non-zero