MidTerm Review

Front

What is the formula to calculate work done?

Back

Work done (W) = Force (F) × Distance (d) Where: - Work is measured in Joules (J) - Force is measured in Newtons (N) - Distance is measured in meters (m)

Front

What is the formula for calculating kinetic energy (KE)?

Back

Kinetic Energy (KE) = 0.5 × mass (m) × velocity (v)² Where: - KE is measured in Joules (J) - Mass is measured in kilograms (kg) - Velocity is measured in meters per second (m/s)

Front

Define impulse in physics.

Back

Impulse is the change in momentum of an object when a force is applied over a period of time. It is calculated as the product of force and the time duration over which the force acts.

Front

How do you calculate momentum?

Back

Momentum (p) = mass (m) × velocity (v) Where: - Momentum is measured in kg m/s - Mass is measured in kilograms (kg) - Velocity is measured in meters per second (m/s)

Front

What is the net force when two forces are acting in the same direction?

Back

Net force is the sum of all forces acting on an object. If two forces are acting in the same direction, Net Force = F1 + F2.

Front

What is the net force when two forces are acting in opposite directions?

Back

Net force is the difference between the two forces. If F1 is greater than F2, Net Force = F1 - F2.

Front

What is the unit of force in the International System of Units (SI)?

Back

The unit of force is the Newton (N).

Front

What is the relationship between work, force, and distance?

Back

Work is done when a force causes an object to move. The amount of work done is directly proportional to the force applied and the distance moved in the direction of the force.

Front

If a 2 kg cart has a momentum of 16 kg m/s, what is its velocity?

Back

Velocity (v) = Momentum (p) / Mass (m) = 16 kg m/s / 2 kg = 8 m/s.

Front

What is the significance of the work-energy principle?

Back

The work-energy principle states that the work done on an object is equal to the change in its kinetic energy.