Forces
What is a force?
Answer
A push or a pull acting on an object
Forces - Science
Question:
What is a force?
Answer:
A push or a pull acting on an object
Question:
What unit measures force?
Answer:
The newton (N)
Question:
What is gravity?
Answer:
A force that pulls objects toward each other, like toward Earth
Question:
What is weight?
Answer:
The force of gravity acting on a mass
Question:
What is friction?
Answer:
A force that slows movement between touching surfaces
Question:
How can you reduce friction?
Answer:
Use lubricant, wheels or smoother surfaces
Question:
What is air resistance?
Answer:
Friction from air pushing against a moving object
Question:
What are balanced forces?
Answer:
Forces that cancel out, so motion does not change
Question:
What are unbalanced forces?
Answer:
Forces that do not cancel, causing a change in motion
Question:
What is Newton's first law?
Answer:
An object stays at rest or in motion unless a force acts on it
Question:
What is Newton's second law?
Answer:
Force equals mass times acceleration (F = ma)
Question:
What is Newton's third law?
Answer:
Every action has an equal and opposite reaction
Question:
What is inertia?
Answer:
An object's resistance to a change in motion
Question:
What is speed?
Answer:
How far something travels in a certain time
Question:
What is acceleration?
Answer:
A change in speed or direction over time
Question:
What is magnetism?
Answer:
A force that attracts or repels magnetic materials
Question:
What poles repel each other?
Answer:
Like poles — north and north, or south and south
Question:
What is a contact force?
Answer:
A force that acts only when objects touch, like friction
Question:
What is a non-contact force?
Answer:
A force acting at a distance, like gravity or magnetism
Question:
What is upthrust?
Answer:
The upward force of a liquid or gas on an object in it