Physics Precomp 2022

Which comes first Deci or Deka

Deka

Is distance scalar or vector?

scalar

Is displacement scalar or vector?

vector

Is speed scalar or vector?

scalar

Is velocity scalar or vector?

vector

Is acceleration scalar or vector?

vector

Is mass scalar or vector?

scalar

Is weight a scalar or vector?

vector

Is force a scalar or a vector?

vector

Under what situation would displacement be zero, but not distance

If an object moves in a moves in a complete closed loop, the displacement would be zero, but the distance would be perimeter of the loop

What does it mean to have constant velocity

Constant velocity means that an object in motion is moving in a straight line at a constant speed

Three way velocity can change

A change in speed, in direction, or a change in both

What does it mean to have negative acceleration

the object is slowing down

What is Newton's first law?

An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

How do you know how much inertia an object has?

See how much mass there is

What is Newton's second law?

the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass

What does directly proportional mean?

when one increases, the other increases

What does inversely proportional mean?

as one increases the other decreases

What is net force?

The sum of all forces acting on an object

What does it mean for an object to be in equilibrium?

All the forces are balanced and the net force is zero therefore the acceleration is zero, and velocity is constant.

How do you know if an object has unbalanced forces acting on it

If an object has unbalanced forces acting on it, the net force is not zero, acceleration is not zero, and velocity is not zero

State Newton's third law of motion.

For every action there is an equal and opposite reaction

Three thing that are true about action reaction force pairs

Action and reaction force are equal in strength and opposite in direction action reaction pairs occur at the exact same time action and reaction pairs do not cancel because they act on different objects