Physics Fundamentals Quiz

What happens to the displacement of a ball thrown off a cliff when it is above the cliff top?

• It is zero

• It is positive

• It is negative

• It remains constant

What causes friction between two surfaces?

• Electrostatic charges

• Gravitational pull

• Surface roughness

• Magnetic fields

What happens to the velocity of a car traveling around a roundabout at constant speed?

• It remains constant

• It decreases

• It increases

• It constantly changes

What is the nature of electrostatic force?

• It is a contact force

• It is a non-contact force

• It is a gravitational force

• It is a magnetic force

What is the effect of a force on an object in terms of motion?

• It stops the object

• It changes the object's motion

• It has no effect

• It changes the object's color

Where is the weight of an object considered to act?

• At the object's surface

• At the object's center of mass

• At the object's top

• At the object's bottom

What are the forces acting on a skydiver?

• Air resistance and weight

• Friction and weight

• Tension and weight

• Magnetic force and weight

What is the air resistance acting on the skydiver in Diagram C?

• 700 N

• 950 N

• 883 N

• 1000 N

What is the unit of work done?

• Newton

• Joule

• Meter

• Watt

What happens if a single force is applied to an object?

• It will move in that direction

• It will remain stationary

• It will move in the opposite direction

• It will rotate