isdanvaskbvs Flashcards
1
Q
Equation for weight
A
mass x gravity
2
Q
Equation for work done
A
force x distance
3
Q
Equation for kinetic energy
A
0.5 x mass x velocity squared
4
Q
Equation for pressure
A
Force / Area
height x density x gravity
5
Q
Equation for distance
A
speed x time
6
Q
Equation for acceleration
A
Change in velocity / time taken
7
Q
Final velocity - initial velocity = `
A
2 x acceleration x distance
8
Q
Equation for resultant force
A
mass x acceleration
9
Q
Equation for stopping distance
A
thinking distance + breaking distance
10
Q
Things that affect thinking distance
A
- drugs
- alcohol
- tiredness
11
Q
Things that affect breaking distance
A
- condition of tyres
- condition of road
- weight of the car
12
Q
how to make a car safe
A
- seat belts
- baby seats
- crumple zones
- air bags
13
Q
Equation for momentum
A
mass x velocity
14
Q
Law of momentum
A
momentum is always conserved
momentum before = momentum afterwards
15
Q
Equation for time period
A
1 / frequency
