forces

Question 1

what is a force

Answer 1

A force is a push or pull that acts on an object due to the interaction with another object.

Question 2

what are contact forces

Answer 2

Push
Pull
Friction
Air resistance
Tension

Question 3

what are non-contact forces

Answer 3

Gravitational force
Electrostatic force
Magnetic force

Question 4

what is mass

Answer 4

tells us how much matter or substances something has
measured in kg

Question 5

what is weight

Answer 5

is a force acting on an object due to gravity. This is caused by a gravitational field around the Earth.

Question 6

scalar quantities

Answer 6

have magnitude but no direction

Question 7

vector quantities

Answer 7

have magnitude and direction

Question 8

examples of scalar quantities

Answer 8

temp
mass
energy
distance
speed
density

Question 9

examples of vector quantities

Answer 9

displacement
velocity
acceleration
force
weight
momentum

Question 10

what is work

Answer 10

another way of saying energy is transferred

Question 11

what is the law of conservation

Answer 11

Energy cannot be created or destroyed.
Energy can only be transferred.

Question 12

what does the term elasticity mean

Answer 12

is a property of an object which can be stretched, bent or compressed but it restores to it’s original shape.

Question 13

what’s the independent variable

for the hooks law
required practical

Answer 13

forces

Question 14

whats the dependent variable

for the hook and law
required practical

Answer 14

the extension of the spring

Question 15

whats the control variable

for the hook and law
required practical

Answer 15

same spring
same ruler

Question 16

what does deformation mean

Answer 16

change in shape

Question 17

what is elastic deformation

Answer 17

is reversed when the force is removed.

Question 18

inelastic deformation

Answer 18

cannot be reversed when the force is removed.
There is now a permanent change in shape.

Question 19

what is speed

Answer 19

how fast something is going

Question 20

velocity

Answer 20

how fast something is going in a specific direction

Question 21

what is acceleration

Answer 21

measures how quickly something gets faster

Question 22

declaration

Answer 22

velocity slowing down,decreseing

Question 23

what is uniform acceleration

Answer 23

If an object’s speed (velocity) is increasing at a constant rate

Question 24

newton’s first law of motion

Answer 24

Objects will stay at rest or in constant speed unless if the force is unbalanced.

Question 25

newton’s second law of motion

Answer 25

resultant force = mass × acceleration

Question 26

newtons third law of motion

Answer 26

For every action, there is an equal and opposite reaction

Question 27

what is stopping distance

Answer 27

The total distance of thinking distance and the braking distance.

Question 28

thinking distance

Answer 28

the distance a car travels whilst braking

Question 29

Friction

Answer 29

One of forces the road exerts on the tyres as the car is stopping.

Question 30

human factors that cause crashes

Answer 30

tiredness
alcohol and drugs
speeding

Question 31

car/road factors that cause car crashes

Answer 31

poor visibility
wet/icy roads
car broken

Question 32

what is momentum

Answer 32

strength or force of a moving object, due to the object’s mass and velocity.