forces and motion Flashcards
1
Q
what is acceleration?
A
how quickly something speeds up or slows down
2
Q
What is newton’s first law?
A
a resultant force is required to change the motion of an object.
3
Q
What is the second law?
A
If a non-zero resultant force acts on an object it will accelerate.
4
Q
Second law of motion (2)
A
Size of resultant force is directly proportional to the acceleration it causes.
5
Q
What is inertia?
A
tendancy for the motion of an obeject to remain unchanged.
6
Q
What is inertial mass?
A
how difficult it is to measure an object’s velocity.
