Forces And Motion

Question 1

What is a vector

Answer 1

Physical quantaties with size and direction

Question 2

What is displacement

Answer 2

The distance without a change in direction

Question 3

What is scalar

Answer 3

Physcial quantaties with size but no direction

Question 4

What is the difference between speed and velocity

Answer 4

Speed is how fast a quantity is moving (scalar)
velocity has size and direction and how fast it is going in that direction (vector)

Question 5

How many mm = to 1N

Answer 5

10mm=1N

Question 6

What is force measured in

Answer 6

Newtons

Question 7

What is newtons third law of motion

Answer 7

for every action there is an equal and opposite reaction

Question 8

What is the formula for speed

Answer 8

Speed = distance/time

Question 9

What is the letter for speed

Answer 9

V

Question 10

How do you calculate acceleration

Answer 10

Acceleration=change in velocity/time taken for change

Question 11

How do you calculate velocity

Answer 11

Distance/time

Question 12

What is thinking time

Answer 12

The speed of your mind reacting to the danger ahead

Question 13

What is a force

Answer 13

A push or a pull on an object that is caused by it interacting with something

Question 14

What is a contact force

Answer 14

When two objects need to be touching for a force to act

Question 15

What is a non-contact force

Answer 15

If objects dint need to be touching for a force to act

Question 16

What is an interaction pair of forces

Answer 16

A pair of forces that are equal and opposite and act on two interacting object

Question 17

What is weight

Answer 17

A force acting on an object due to gravity, therefore the same object on earth and mars will have the same mass but different weight

Question 18

How do you calculate the weight of an object

Answer 18

Weight (N) = mass (KG) x gravitational field strength (N/KG)

Question 19

What is the weight, mass, gravitational field strength triangle

Answer 19

————-Weight————-

Mass X Gravitational foeld strength

Question 20

What is a resultant force

Answer 20

The sum of all the forces. For example; <200N 🚗100N> | <200-100> =<100N

Question 21

When is work done on an object

Answer 21

When a force moves an object through a distance energy is transferred and work is done on the object

Question 22

What is the equation to find work done

Answer 22

Work done (j)=force(N) x distance moved (m)

Question 23

What is an equillibrium

Answer 23

All forces acting on an abject to form a resultant force of 0

Question 24

What is electrostatic force

Answer 24

The force between two charged object

Question 25

What is thrust

Answer 25

The force causing an object to move (like the force from a rocket engine)

Question 26

What is air resistance

Answer 26

The friction of the air on a moving object

Question 27

What is upthrust

Answer 27

The force of a fluid or gas (e.g water) pushing an object upwards

Question 28

Bhat is reactant force

Answer 28

The force due to contact between two objects

Question 29

What is compression

Answer 29

Forces that act inward on an object

Question 30

What is friction

Answer 30

A force that opposes motion, occurs when objects rub off eachother

Question 31

What is air resistance

Answer 31

A type of friction, occurs when an object moves through air

Question 32

What device can weight be measured in

Answer 32

Newton-meter

Question 33

Vhat is the centre of mass

Answer 33

The point through which the weight of the object reacts

Question 34

What is the work done, force, distance moved formula triangle

Answer 34

Work(W)
Force(F)—————–Distance moved (s)