Chapter 4 Flashcards
1
Q
Mass
A
fixed, measured in kg
2
Q
Weight
A
measured in N, variable
3
Q
weight formula
A
mg
4
Q
spring force formula
A
F=kx
5
Q
compared to mass of an apple, the mass of the apple on the moon is?
A
the same
6
Q
Newtons 1st Law
A
law of inertia, object continues unless acted on by another force
7
Q
Newtons 2nd Law
A
F=ma
8
Q
Newtons 3rd Law
A
equal and opposite reaction
9
Q
compared to a 1kg block, a 2kg block has twice as much
A
inertia, mass, volume
10
Q
Harry pulls on the end of a spring attached to a wall, the reaction to harrys pulll on the spring is
A
the spring pulling on harry
11
Q
Nellie pulls with a force of 50 N on a horizontal rope tied to a tree at rest, the net force on the rope is
A
Zero and the tension is 50 N
12
Q
tension is actually a force that tends to..
A
stretch something
13
Q
equilibrium rule
A
net force is 0
