Kinematics

Question 1

What is Speed?

Answer 1

Distance travelled per unit time

Question 2

What is Average Speed?

Answer 2

Total distance travelled per unit time

Question 3

What is Instantaneous Speed?

Answer 3

Speed of an object at a particular instant

Question 4

What is Uniform Speed?

Answer 4

Change in distance travelled by object per unit time is the same

Question 5

What is Velocity?

Answer 5

Rate of change of displacement

Question 6

What is Acceleration?

Answer 6

Rate of change of velocity, occurs when speed/direction changes

Question 7

What is Uniform Acceleration?

Answer 7

Change in velocity of object per unit time is the same

Question 8

What is Non-Uniform Acceleration?

Answer 8

Change in velocity of object per unit time isn’t the same

Question 9

Equations for kinematics

Answer 9

1) a = (v-u) / t
2) s = 1⁄2 (u +v) t
3) s = ut + 1⁄2 at²
4) v²-u²= 2as

Question 10

What can be found from the Gradient of Displacement-Time Graph?

Answer 10

Gradient of Displacement-Time graph gives the Velocity

Question 11

Gradient of object at rest (Displacement-Time Graph)

Answer 11

Zero gradient

Question 12

Gradient of object with Uniform Velocity (Displacement-Time Graph)

Answer 12

Constant gradient

Question 13

Gradient of object with Non-Uniform Increase of Velocity (Displacement-Time Graph)

Answer 13

Increasing gradient

Question 14

Gradient of object with Non-Uniform Decrease of Velocity (Displacement-Time Graph)

Answer 14

Decreasing gradient

Question 15

What can be found from the Gradient of Velocity-Time Graph?

Answer 15

Gradient of velocity-time graph gives the acceleration

Question 16

Gradient of object at rest (Velocity-Time Graph)

Answer 16

Zero gradient at zero m/s

Question 17

Gradient of object with Uniform Velocity (Velocity-Time Graph)

Answer 17

Zero gradient at 10 m/s

Question 18

Gradient of object with Uniform Acceleration (Velocity-Time Graph)

Answer 18

Positive and constant gradient

Question 19

Gradient of object with Uniform Deceleration (Velocity-Time Graph)

Answer 19

Negative and constant gradient

Question 20

Gradient of object with Increasing Acceleration (Velocity-Time Graph)

Answer 20

Positive and increasing gradient

Question 21

Gradient of object with Decreasing Acceleration (Velocity-Time Graph)

Answer 21

Positive and decreasing gradient

Question 22

What can be found from the area under the Velocity-Time Graph?

Answer 22

Displacement

Question 23

What should be done of values are given in a graph?

Answer 23

Use the values in answer

Question 24

What changes the acceleration that objects fall at?

Answer 24

All objects fall at same acceleration regardless of mass/size

Question 25

When does Free Fall occur?

Answer 25

Free fall occurs when gravity is only force acting on object

Question 26

What is the Acceleration of an object due to Free Fall?

Answer 26

10m/s²