Physical Science

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, typically calculated as PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

How does mass affect gravitational potential energy?

Back

The greater the mass of an object, the more gravitational potential energy it has at a given height, as potential energy is directly proportional to mass.

Front

What factors determine the gravitational potential energy of an object?

Back

Gravitational potential energy depends on the object's mass, the height above a reference point, and the strength of the gravitational field.

Front

What is the relationship between speed and motion?

Back

Speed is the distance traveled per unit of time. An object in motion can have constant speed, increasing speed, or decreasing speed.

Front

What happens to an object in motion if no forces act on it?

Back

According to Newton's first law of motion, an object in motion will remain in motion at a constant speed and in a straight line unless acted upon by an external force.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. The greater the mass of an object, the greater its inertia.

Front

What is the effect of air resistance on falling objects?

Back

Air resistance opposes the motion of falling objects, causing them to fall slower than they would in a vacuum.

Front

What is the concept of relative motion?

Back

Relative motion is the calculation of the motion of an object with respect to another object. For example, a person in a moving train perceives the outside world as moving backward.

Front

What is constant speed?

Back

Constant speed means an object covers equal distances in equal intervals of time, regardless of the direction of motion.

Front

How do we measure speed?

Back

Speed is measured as the distance traveled divided by the time taken, typically expressed in units like meters per second (m/s) or kilometers per hour (km/h).