Forces And Motion Paper 1

Question 1

What is the unit of measurement for kilograms

Answer 1

Kg

Question 2

What is the unit for metres

Answer 2

M

Question 3

What is the unit for metres per second

Answer 3

M/s

Question 4

What is the unit for metres per second squared

Answer 4

M/s^2

Question 5

What is the unit for newtons

Answer 5

N

Question 6

What is the unit for newtons per kilogram

Answer 6

N/kg

Question 7

What is the equation for acceleration

Answer 7

Acceleration=(final velocity-initial velocity)/time taken

Question 8

What is the equation to find the average speed

Answer 8

Average speed=distance travelled/time taken

Question 9

What axis does distance go on in a graph

Answer 9

Y axis

Question 10

What axis does time go on in a distance time graph

Answer 10

X axis

Question 11

What axis does velocity go on in a velocity time graph

Answer 11

Y axis

Question 12

What axis does time go on a velocity time graph

Answer 12

X axis

Question 13

How do you find the displacement/distance on a velocity time graph

Answer 13

Area under line

Question 14

How do you work out the speed on a distance time graph

Answer 14

Work out the gradient

Question 15

How do you calculate acceleration on a velocity time graph

Answer 15

Gradient

Question 16

What is the equation to find displacement

Answer 16

Displacement=final velocity+initial velocity/2xtime. S=(v+u)/2xt

Question 17

What is the equation linking acceleration, displacement, initial velocity and final velocity

Answer 17

Final velocity^2=initial velocity^2+2accelerationxdisplacment. V^2=u^2+2as

Question 18

What can forces do to an object

Answer 18

Change speed, changes direction, change shape

Question 19

What are three contact forces

Answer 19

Friction, air resistance, buoyancy

Question 20

What are three non contact forces

Answer 20

Weight, gravitational force, electrostatic forces

Question 21

What is a contact force

Answer 21

When objects are in contact with each other

Question 22

What are non contact forces

Answer 22

Occur when objects are separated

Question 23

What is a vector quantity

Answer 23

Something which has magnitude and direction

Question 24

What is a scalar quantity

Answer 24

Something which is only magnitude

Question 25

What is the vector nature of forces

Answer 25

Forces are vector quantities. When two forces act, we need to take into the account the direction of the forces to find the overall net force called the resultant force.

Question 26

How do you calculate 2 forces which are perpendicular

Answer 26

F^2+C^2 all square rooted-do Pythagoras

Question 27

What is friction

Answer 27

A force that always acts in the opposite direction to motion

Question 28

What 2 factors affect friction

Answer 28

Type of surface,mass/weight

Question 29

What is Newton’s first law of motion

Answer 29

An object will remain at rest or will move at constant velocity unless an external force acts on it

Question 30

What object moves with a constant velocity

Answer 30

A rocket in space

Question 31

What is Newton’s second law of motion

Answer 31

The resultant force applied to a object is proportional to the acceleration of the object

Question 32

What is the relationship between mass, unbalanced force and acceleration

Answer 32

Resultant force=massxacceleratiom. F=ma

Question 33

What is the equation linking mass, gravitational field strength and weight

Answer 33

Weight=massxgravitationa. W=mg

Question 34

What is the gravitational field strength on earth

Answer 34

10N/Kg

Question 35

Why is gravitational field strength different on different planets

Answer 35

As each planet has a different mass

Question 36

How do you calculate stopping distance

Answer 36

Thinking distance+braking distance

Question 37

What factors affect stopping distance

Answer 37

Speed, mass, road condition, reaction time

Question 38

What forces act on falling objects

Answer 38

Gravitational force and air resistance

Question 39

What does air resistance depend on

Answer 39

The surface area of an object, the speed of a object

Question 40

What is the terminal velocity

Answer 40

Given to the constant speed of an object when the air resistance acting on an object equals the weight force of the object, the resultant force =0N.

Question 41

What is hookes law

Answer 41

Force is directly proportional to the extension of a object

Question 42

What is the equation linking extension, force applied and spring constant

Answer 42

Force applied=spring constant x extension

Question 43

What is the spring constant measured in

Answer 43

(N/m) or (N/cm)

Question 44

How can you work out the spring constant from a graph

Answer 44

The gradient

Question 45

What is elastic behaviour

Answer 45

Materials that return to their original length when the force applied to it is removed

Question 46

What is plastic behaviour

Answer 46

Materials that do not return to their original length when force is removed

Question 47

What is the elastic limit

Answer 47

Maximum force which can be applied before a material becomes plastic

Question 48

What is the plastic deformation

Answer 48

How much the object will have stretch once the force is removed from the object

Question 49

How can you tell the elastic limit from a graph

Answer 49

Up until the elastic limit the line is linear and passes through the origin, the item is elastic. After elastic limit the line is non-linear meaning it’s plastic

Question 50

What is measured in M/s

Answer 50

Speed and velocity

Question 51

What is measured in M/s^2

Answer 51

Acceleration

Question 52

What is gravitational field strength measured in

Answer 52

N/kg

Question 53

What is measured in N

Answer 53

Weight and force

Question 54

How do you calculate the resultant force

Answer 54

Subtract the smaller force from the larger one then say which direction the force is going

Question 55

Does force go on the x or y axis on a force extension graph

Answer 55

Y axis

Question 56

Does the extension go on the x or y axis on a force extension graph

Answer 56

X axis