Forces Flashcards
1
Q
Stopping distance =
A
Thinking + Braking distance
2
Q
What is hooks law?
A
The amount elastic material stretches is proportional to the force applied to it (if u double the force, its extension will double)
3
Q
Force= ?
A
Spring constant x extension
4
Q
If a bungee rope has a spring constant of 60
N/m. How far will it extend
(stretch) if a
person who weighs 600N (60Kg) is placed on
it?
A
600N (FORCE) / 60 N/m (SPRING CONSTANT) = 10m
5
Q
If a bungee rope has a spring constant of 60
N/m. How much must a person weigh in N if
it we want it to extend (stretch) 20m?
A
20 x 60= 200N Extension x Spring constant
6
Q
A marathon runner runs 25km in 2 hours. What is their speed in m/s?
A
Distance / time = 0.347
7
Q
Distance = ?
A
Speed x time
8
Q
A
