P9 and P10 - Motion and Force

Question 1

Distance-Time Graph

Answer 1

Shows speed of an object

Question 2

Speed (v) (Distance-Time Graph)

Answer 2

Distance (m)/Time (s)

Question 3

Straight Diagonal Line on Velocity / Distance-Time Graph

Answer 3

Shows constant acceleration / deacceleration

Question 4

Horizontal Lines Distance-Time Graph

Answer 4

Not moving, stationary

Question 5

Curved Line on Velocity / Distance-Time Graph

Answer 5

steady acceleration / deacceleration

Question 6

Finding Gradient of Curved Line on Distance-Time Graph

Answer 6

Draw a tangent on its side, and find gradient

Question 7

Formula for gradient

Answer 7

Rise/Run or y2 - y1/x2 - x1

Question 8

Acceleration (Velocity-Time Graph)

Answer 8

Change in Velocity / Chance in Time

Question 9

Horizontal Lines on Velocity-Time Graph

Answer 9

Constant Velocity, shown in y-axis

Question 10

Distance Travelled on Velocity-Time Graph

Answer 10

Find area under the curve

Question 11

Velocity-Time Graph

Answer 11

Shows acceleration/deacceleration of an object

Question 12

Uniform Acceleration

Answer 12

Constant Speeding/Slowing

Question 13

Terminal Velocity

Answer 13

Constant Velocity of an Object

Question 14

Resultant Force

Answer 14

Mass (kg) x Acceleration

Question 15

Momentum (kg/m/s)

Answer 15

Mass (kg) x Velocity (m/s)

Question 16

Conservation of Momentum

Answer 16

Where momentum never changes, before/after an occurrence

Question 17

Newtons Law

Answer 17

Acceleration is proportional to Resultant Force but inversely proportional to Mass of object

Question 18

Weight (Newtons)

Answer 18

Grav Field Strength (N/g) x Mass (kg)

Question 19

Thinking Distance (Force on the Road)

Answer 19

Reaction until driver breaks

Question 20

Braking Distance (Forces on the Road)

Answer 20

Distance travelled from initial breaking point

Question 21

Stopping Distance

Answer 21

Thinking Distance + Braking Distance

Question 22

Factors Affecting Stopping Distance

Answer 22

• Alcohol / Drowsiness
• Speed of Vehicle
• Weather, wet or icy roads

Question 23

Momentum

Answer 23

Momentum is a Vector Quantity and is same before/after an event

Question 24

Elastic

Answer 24

Something that can change shape with force and go back to its original self when force stops being applied

Question 25

Extension

Answer 25

Total Extension of Spring - Original Extension

Question 26

Stretch Test

Answer 26

• Get 2 clamps, one for a ruler to measure the extension of a spring on the other clamp
• Add weights to weight hanger attached to the spring and write down extension and mass of weights for every increase of weights

Question 27

Hooke’s Law

Answer 27

• Extension is proportional force applied unless ‘Limit of Proportionality’ has been met
• This also goes for Compression, object is squished
• Shows as a straight line on a graph
• Force Applied (N) = Extension (N/m) x Extension (m)

Question 28

Limit of Proportionality (Elastic Deformation)

Answer 28

When an object is stretched to an extent that its original state has changed when force is removed