Forces Flashcards
1
Q
What are vectors
A
Vectors have both magnitude (measurements) and direction
2
Q
What are scalars
A
Scalars only have magnitude (measurements)
3
Q
Examples of contact forces
A
Air resistance, tension, normal contact forces
4
Q
Examples of non-contact forces
A
Magnetic forces, gravitational forces, electrostatic
5
Q
What is the equation that links Weight, Mass and the gravitational field strength
A
Weight (N) = Mass (kg) x Gravitational Field Strength (N/kg)
6
Q
How do you figure out the resultant force?
A
Add like forces, take away opposite forces
E..G.
1700 –>
2000 –>
<– 1200
<– 2000
(1700 + 2000) - (1200+2000)
OR
1700 –>
1200 ^
(sqrt) 1700^2 + 1200^2
7
Q
What equation links , Work done, Distance, Force
A
Work Done (J) = Force (N) x Distance (s)
8
Q
What is the equivalate of 1J in Newtons
A
1J = !N
