Physics - Fall Semester Review

Front

What is the force acting on two objects of equal size dropped simultaneously in a vacuum?

Back

They both have the same amount of force acting on them, as force due to gravity is equal for both regardless of mass.

Front

Define inertia.

Back

Inertia is the resistance of an object to any change in its motion.

Front

If you are using 72 N of centripetal force to move a ball in a circle, what happens to the force if the radius is doubled?

Back

The force would be 36 N.

Front

What direction does centripetal acceleration act in circular motion?

Back

Centripetal acceleration acts towards the center of the circular motion.

Front

What is the x component of a vector if the total vector is 104 N?

Back

The x component of the vector is 104 N.

Front

What is the formula for calculating centripetal force?

Back

Centripetal force (Fc) = (mass (m) * velocity (v)^2) / radius (r).

Front

Explain the concept of gravitational force.

Back

Gravitational force is the attractive force between two masses, proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

Define kinetic energy.

Back

Kinetic energy is the energy of an object due to its motion, calculated as KE = 1/2 mv^2, where m is mass and v is velocity.

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.