Forces Flashcards
1
Q
What is Newton’s third law?
A
For every action there is an equal and opposite reaction
2
Q
What is Newton’s second law?
A
Acceleration is directly proportional to force
f=ma
3
Q
What is Newton’s first law?
A
An object will remain at rest or move with a constant velocity if the resultant force is zero
4
Q
What does it mean if the resultant force is zero?
A
The object is in equilibrium
5
Q
If the object is at constant speed, what is the acceleration?
A
Zero
6
Q
What assumptions can be used if the string is light?
A
Tension is the same throughout the length of the string and the mass of the string is negligible
7
Q
What assumptions can be used if the string is inextentsible? (Can’t be stretched)
A
Acceleration of the objects are the same
