Physics Concepts - Understand & Learn with Examples

Net acceleration of a body on a curved path"What is the net acceleration of a body on a curved path?"10) Kinetic energy of a rocket after firing its engine"What is the kinetic energy of a rocket after firing its engine?"14) Acceleration of a point on a wheel"What is the acceleration of a point on a wheel?"18) kinetic enregy expressed in terms of momentum"What is the kinetic energy expressed in terms of momentum?"19) distance traveled & energy lost by skier"What is the distance traveled and energy lost by a skier?"20) escape speed for spacecraft"What is the escape speed for a spacecraft
  • #1
ScoutFCM
17
0
How am I supposed to figure out these concepts? No problems to do, but I'm just not understanding the material/concepts? anyone care to explain/teach me?

5.) Weight of a man who is throwing a bag of potatoes?

7/8) Net acceleration of a body on a curved path

10) Kinetic energy of a rocket after firing its engine

14) Acceleration of a point on a wheel

18) kinetic enregy expressed in terms of momentum

19) distance traveled & energy lost by skier

20) escape speed for spacecraft

21) tension and agular speed of a rock on a string

22) trajectories after a football tackle

23) power wasted by falling water
 
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  • #2
What concepts?

"5.) Weight of a man who is throwing a bag of potatoes?"

What are you asked about him? What was the original question?
 

1. What is the difference between classical mechanics and quantum mechanics?

Classical mechanics is a branch of physics that studies the motion of macroscopic objects, while quantum mechanics deals with the behavior of particles at the atomic and subatomic level. Classical mechanics follows deterministic laws, while quantum mechanics is based on probability and uncertainty.

2. What is the concept of energy in physics?

Energy is a fundamental concept in physics that describes the ability of a system to do work. It can exist in many forms, such as kinetic energy, potential energy, thermal energy, and electromagnetic energy. The law of conservation of energy states that energy cannot be created or destroyed, only transferred or converted from one form to another.

3. What is the difference between speed and velocity?

Speed is a measure of how fast an object is moving, while velocity includes both the speed and direction of an object's motion. Speed is a scalar quantity, while velocity is a vector quantity. This means that speed has only magnitude, while velocity has both magnitude and direction.

4. What is the concept of force in physics?

In physics, force is defined as a push or pull that can cause an object to accelerate. It is a vector quantity, meaning it has both magnitude and direction. Some common types of forces include gravitational force, electromagnetic force, and frictional force.

5. What is the difference between mass and weight?

Mass is a measure of the amount of matter in an object, while weight is a measure of the force exerted on an object due to gravity. Mass is a scalar quantity and is measured in kilograms, while weight is a vector quantity and is measured in newtons. The mass of an object remains constant regardless of its location, but weight can change depending on the strength of the gravitational force.

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