Forces Motion And Energy - Energy and Motion

Question 1

WHAT IS ENERGY?

Answer 1

In technology, we define energy as a system’s capacity to perform work, for example, making objects move.

Question 2

POTENTIAL ENERGY

Answer 2

Potential energy is energy that is stored and can be used. Think of a ball in your hand. It has potential energy. If you let it fall, its potential energy will transform into kinetic energy and it will fall to the ground.

Question 3

KINETIC ENERGY

Answer 3

Kinetic energy is the energy of objects in motion. A moving bicycle or car has kinetic energy. A tossed ball has kinetic energy as well

Question 4

WHAT TRIGGERS MOTION?

Answer 4

A motion can’t be triggered on its own. A force is needed to create motion.

Question 5

WHAT SLOWS MOTION?

Answer 5

Friction is the force that slows down two bodies in contact

Question 6

Rectilinear motion

Answer 6

Motion in a straight line Ex: skateboard

Question 7

Alternating motion

Answer 7

Rectilinear motion executed regularly in one direction and then the other. Ex: trumpet’s piston valves

Question 8

Circular motion

Answer 8

Motion in a circle. Ex: A ferris wheel

Question 9

Oscillatory motion

Answer 9

Back and forth motion Ex: A swing