Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It is measured in meters per second squared (m/s²).

Front

How do you calculate gravitational force between two masses?

Back

The gravitational force (F) can be calculated using Newton's law of universal gravitation: F = G * (m1 * m2) / r², where G is the gravitational constant (6.674 x 10^-11 N(m/kg)²), m1 and m2 are the masses, and r is the distance between their centers.

Front

What is potential energy (PE)?

Back

Potential energy is the energy stored in an object due to its position or configuration. For example, an object at a height has gravitational potential energy given by PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

What is kinetic energy (KE)?

Back

Kinetic energy is the energy of an object in motion, calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

What happens to potential energy as a pendulum swings?

Back

As a pendulum swings, its potential energy at the highest point is converted into kinetic energy at the lowest point.

Front

What does a velocity-time graph represent?

Back

A velocity-time graph shows how the velocity of an object changes over time. The slope of the graph represents acceleration.

Front

What is the formula for power?

Back

Power is defined as the rate at which work is done or energy is transferred. It can be calculated using the formula P = W/t, where P is power, W is work done, and t is time.

Front

What is work in physics?

Back

Work is done when a force causes an object to move. It is calculated using the formula W = Fd cos(θ), where F is the force applied, d is the distance moved, and θ is the angle between the force and the direction of motion.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What is the significance of the area under a velocity-time graph?

Back

The area under a velocity-time graph represents the displacement of the object over that time interval.