Forces And Motion (10)

Question 1

In a distance-time graph, what does the gradient =

Answer 1

Gradient = speed

Question 2

In a velocity-time graph, what does the gradient =

Answer 2

Gradient = acceleration

Question 3

In a distance-time graph, flat sections represent …

Answer 3

Where there is no movement, the object has stopped moving

Question 4

In a velocity-time graph, flat sections represent …

Answer 4

Steady speed

Question 5

In a ____________-time graph, the steeper the graph, the greater the acceleration or decceleration

Answer 5

Velocity-time

Question 6

In a distance-time graph, what do downhill sections mean

Answer 6

That it’s going back in the opposite direction

Question 7

In a velocity-time graph, uphill sections (/) represent ________________

Answer 7

Acceleration

Question 8

In a velocity-time graph, downhill sections () represent ________________

Answer 8

Deceleration

Question 9

In which graph does the area underneath represent distance

Answer 9

In velocity-time graph

Question 10

What does a curve represent on a velocity-time graph

Answer 10

Changing acceleration

Question 11

How is slowing down represented on a distance-time graph

Answer 11

A levelling of curve

Question 12

What can you calculate from a distance-time graph (1)

Answer 12

Speed

Question 13

What can you calculate from a velocity-time graph (3)

Answer 13

Acceleration
Speed
Distance

Question 14

How do you calculate the speed from a distance-time graph

Answer 14

Speed = gradient = vertical/horizontal

Question 15

How do you calculate acceleration from a velocity time graph

Answer 15

Acceleration = gradient = vertical/horizontal

Question 16

How do you calculate the speed from a velocity time graph

Answer 16

The speed is simply found by reading the value off the velocity axes

Question 17

How do you find the distance travelled from a velocity time graph

Answer 17

The distance travelled is found from the the area underneath the graph

Question 18

What does gravity give every object

Answer 18

A weight

Question 19

What is mass

Answer 19

The amount of ‘stuff’ in an object

Question 20

An object’s _________ will be the same anywhere in the universe

Answer 20

Mass

Question 21

An object has the same ___________ whether is it is on the earth or the moon but its ___________ will be different

Answer 21

Same mass

Different weight

Question 22

Weight is a __________

Answer 22

Force

Question 23

Weight is measured in __________

Answer 23

Newtons

Question 24

Weight is measured using a _____________ ___________

Answer 24

Newton meter

Question 25

Mass is measured in _______________

Answer 25

Kilograms

Question 26

On earth, the strength of gravity is _________

Answer 26

10 N/Kg

Question 27

On the moon, the strength of gravity is _________

Answer 27

1.6 N/Kg

Question 28

Name 3 different types of force

Answer 28

``` Gravity/weight Reaction force Electrostatic force Lift Tension Thrust Drag ```

Question 29

When an object moves in a fluid (air/water), it feels _________ in the opposite direction to its motion

Answer 29

Drag

Question 30

2 ways in which friction occurs

Answer 30

Between solid which are sliding past each other Resistance or drag from fluids Between solid surfaces which are gripping (table)

Question 31

In a fluid, what happens to friction as the speed increases

Answer 31

The friction also increases

Question 32

How can you reduce friction between 2 solids

Answer 32

Lubricant such as oil or grease between the surfaces

Question 33

Due to a build up of resistance, the rate of acceleration slows down however the object is still _______________

Answer 33

Accelerating (getting faster)

Question 34

Eventually once an object can't accelerate any more it has reached its _____________ _____________

Answer 34

Terminal velocity

Question 35

The accelerating force acting on all falling objects is ___________ and it would make them all accelerate at the same rate if it wasn't for _______ _______________

Answer 35

Gravity | Air resistance

Question 36

If an object such as a car is moving at a constant velocity, what do we know about the resultant force

Answer 36

It is zero (all the forces are balanced)

Question 37

What does an unbalanced force produce

Answer 37

Acceleration or decceleration

Question 38

The bigger the force, the ____________ the acceleration or deceleration

Answer 38

Greater

Question 39

The bigger the mass, the _____________ the acceleration or deceleration

Answer 39

Smaller

Question 40

To get a big mass to accelerate as fast as a small mass it needs a bigger __________

Answer 40

Force

Question 41

A resultant force produces acceleration and the formula for this is

Answer 41

F = ma

Question 42

In the formula F = ma, F must always be the _____________ _________

Answer 42

Resultant force

Question 43

If object A exerts a force on object B then object B exerts the exact ____________ on object A

Answer 43

Opposite