Forces

Question 0

Vector

Answer 0

Physical quantity with magnitude and direction e.g. Velocity, pressure, weight, gravity, force

Question 1

Scalar

Answer 1

Physical quantity with magnitude only e.g. Speed, length, area, time, distance

Question 2

Forces are vectors so they can change…

Answer 2

Shape, direction, size, speed

Question 3

Define resultant force

Answer 3

The net force acting on an object

Net meaning overall

Question 4

EMCRRGLSI

Eve must crucify roger reynolds groin like susans infection

Answer 4

Equipment
Measurements
Calculations
Range
Reliability
Graph
Looking for (answer)
Safety
Improvemnts

Question 5

Newton’s 2nd Law

Answer 5

States that the acceleration of an object is directly proportional to the resultant force acting on it

Question 6

Equation for newtons 2nd law

Answer 6

Resultant force= mass x acceleration

F = m x a
In N) (In kg) (In m/s2

Question 7

Drag equation

Answer 7

Drag = friction + air resistance

All in N

Question 8

Weight equation

Answer 8

W = m x g

N) (G/kg) (N/kg

Question 9

What goes on the x axis

Answer 9

Independent variable  
(The one you change)

Question 10

What goes on the y axis

Answer 10

Dependent variable
(The results)

Question 11

Mass stays ….. But weight and gravity …..

Answer 11

Constant

Vary

Question 12

Resultant force equation

Answer 12

A = F / M

m/s2) (N) (g/kg

Question 13

Speed equation

Answer 13

S = D / T

In m/s) (In m) (In s

Question 14

What is the relationship between acceleration and mass

Answer 14

a (Directly proportional sign) 1/mass

Question 15

Define thinking distance

Answer 15

The time it takes a driver to respond to an obstacle, reaction time

Question 16

Define braking distance

Answer 16

The distance travelled between the driver braking and stopping

Question 17

Stopping distance equation

Answer 17

Stopping distance = thinking distance + braking distance

Question 18

What factors could affect thinking distnace

Answer 18

Alcohol influence
Poor visibility
Drug influence
Tiredness

Question 19

What factors could affect braking distance

Answer 19

Vehicle with a large mass
Higher car speed
Road surface

Question 20

Terminal velocity

Answer 20

Weight and drag force are exactly balanced
Acceleration is zero
Speed is constant

Question 21

Stopping distance

Answer 21

Thinking distance + breaking distance

Question 22

Acceleration equation

Answer 22

Change in velocity (final velocity - initial velocity)/time take
A = (v-u) /t
M/s(sq) = (m/s - m/s) /s