Front

What is equilibrium in physics?

Back

Equilibrium refers to a state where the net force acting on an object is zero, resulting in no acceleration. An object in equilibrium can be at rest or moving at a constant velocity.

Front

What is net force?

Back

Net force is the vector sum of all the forces acting on an object. It determines the object's acceleration according to Newton's second law (F=ma).

Front

What does Occam's razor suggest when choosing between competing hypotheses?

Back

Occam's razor suggests that one should select the simpler hypothesis, as it is more likely to be correct.

Front

How do you calculate power in terms of work done and time?

Back

Power (P) is calculated as the work done (W) divided by the time (t) taken, expressed as P = W/t.

Front

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

Back

The unit of power in SI is the watt (W), which is equivalent to one joule per second (J/s).

Front

What is the formula for gravitational potential energy?

Back

Gravitational potential energy (PE) is calculated using the formula PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What is the relationship between work and energy?

Back

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

Front

What is friction and how does it affect motion?

Back

Friction is a force that opposes the relative motion of two surfaces in contact. It can cause an object to slow down or stop.

Front

What is the significance of the slope of a distance-time graph?

Back

The slope of a distance-time graph represents the speed of an object. A steeper slope indicates a higher speed.

Front

What is the formula for calculating kinetic energy?

Back

Kinetic energy (KE) is calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.