The acceleration on any surface is the measure of the force exerted by the surface. The friction force, which is supposed to stop the motion, is eliminated on the frictionless surface. Since the net forces act on the body become zero, acceleration in frictionless surfaces is also zero. What is the formula for the acceleration…

The quality of physics teaching is to be developed considerably so as to achieve its purposes and objectives to understand basic principles, to develop problem solving analytical skills and ability to apply them. The physics teaching must be effective and innovative and beneficial to pupils. What are the problems in teaching physics? Other problems which…

This feeling is caused by the change in direction of the roller coaster. At the top of a roller coaster, the car goes from moving upward to flat to moving downward. This change in direction is known as acceleration and the acceleration makes riders feel as if a force is acting on them, pulling them…

One of the most important numbers in our universe is the number Pi or π. Explore humankind’s odyssey—attempts throughout the ages that truly transcend cultures—to compute, approximate, and understand this enigmatic number. What is the most difficult physics question? 1. What is matter made of? We know matter is made up atoms, and atoms are…

Formula. D = m / (FW – IW) Initial Water Level (mL) Final Water level (mL) Mass (g) What is displacement of water in physics? When an object enters water, it pushes out water to make room for itself. The object pushes out a volume of water that is equal to its own volume. This…

Four forces act on the boat: its weight, the buoyant force (the contact force with the water that pushes the boat up), the forward force of the wind, and the backward drag of the water. How is boating explain the Newton’s third law? The force of wind on the sail causing the boat to move…

In particular, shock waves travel faster than sound, and their speed increases as the amplitude is raised; but the intensity of a shock wave also decreases faster than does that of a sound wave, because some of the energy of the shock wave is expended to heat the medium in which it travels. What is…

Why does a rotating wheel not fall? The reason the bike wheel does not fall flat when it is spinning is because, like all moving objects, it has momentum. To distinguish the momentum due to the spinning of an object, it is called angular momentum – a concept students first encounter in senior physics. How…

Vector Tug of War: If several forces are acting on an object say F1, F2 and F3, then the resultant force on the object is given by Resultant Force = F1 + F2 + F3. Some notable examples: 1. If an object is at rest (not moving), then the sum of the forces must be…

Because of the mathematical principle that any three points must always lie in the same plane, whereas this is not necessarily true for four points. Is a 3-legged table more stable? Three legs are always more stable.” This assumption is correct, as a tripod is always stable on uneven ground. However, there are a few…

Tensional stress is when a rock is pulled apart. For example, if a rock wedged itself into the crack of another rock, and movement of the earth’s crust caused it to wedge even further until the rock broke apart. How do you solve a tension problem in physics? Step 1: Identify the direction of the…

The earliest evidence of pulleys dates back to Ancient Egypt in the Twelfth Dynasty (1991-1802 BCE) and Mesopotamia in the early 2nd millennium BCE. In Roman Egypt, Hero of Alexandria (c. 10-70 CE) identified the pulley as one of six simple machines used to lift weights. How do you solve pulley problems in physics? How…

Newton’s Third Law of Motion states that for every action, there is an equal and opposite reaction. Thus, swimmers must stroke downward in the water to stay afloat and propel forward. This movement is equal and opposite to the force the water exerts against the swimmer to stop them from moving. How do you solve…

Sonic boom is an impulsive noise similar to thunder. It is caused by an object moving faster than sound — about 750 miles per hour at sea level. An aircraft traveling through the atmosphere continuously produces air-pressure waves similar to the water waves caused by a ship’s bow. What causes a sonic boom physics? Sonic…

As the exhaust gases go in one direction, the rocket goes in the other to keep the total momentum of the system constant. This momentum change of the gases gives the rocket the “push” to go forward. We call this push, the thrust of the rocket, i.e. the force exerted on the rocket. How rocket…

The slope is defined as a change in position (rise) over the change in time (run). And this is the definition of the velocity. How do you do incline problems in physics? What is the formula for slope in physics? So if they’re calculating slope, they’re using Equation (1): m = Δy/Δx. Looking at the…

As the slingshot is pulled back, chemical energy is transferred from David’s muscles to elastic energy in the bands of the slingshot. After the slingshot is released, the elastic energy is transferred to the stone as energy of motion (kinetic energy). What is the physics behind a slingshot? Slingshot physics involves the use of stored…

As you ride a roller coaster, its wheels rub along the rails, creating heat as a result of friction. This friction slows the roller coaster gradually, as does the air that you fly through as you ride the ride. How does physics affect roller coasters? At the top of the loop, the force of the…

When you plummet down a steep hill, gravity pulls you down while the acceleration force seems to pull you up. At a certain rate of acceleration, these opposite forces balance each other out, making you feel a sensation of weightlessness — the same sensation a skydiver feels in free fall. Where do you feel weightless…

The climber must pull down on the rope to counter the force of gravity on him/herself. He/she must pull with a greater force than that of gravity to lift themselves off the ground. What law of motion is climbing a rope? Newton’s Third Law of Motion. Whenever one body exerts a force on a second…