Kinematics (Unit 1)

Question 1

Mean acceleration?

Answer 1

V-U/t

Question 2

Mean Velocity?

Answer 2

Total Displacement/ total time

Question 3

Mean Speed?

Answer 3

Total distance/ total time

Question 4

Displacement?

Answer 4

[Vector] distance between two locations measured along the shortest
path joining them.

Question 5

Velocity? (meaning)

Answer 5

Rate of change of displacement.

Question 6

Acceleration (meaning)

Answer 6

Rate of change of velocity.

Question 7

Gradient of a displacement time graph?

Answer 7

Velocity

Question 8

Gradient of a velocity time graph?

Answer 8

Acceleration

Question 9

Area under a velocity time graph?

Answer 9

-Displacement

Question 10

-How does terminal velocity work?

Answer 10

-As the body falls, it accelerates
-As the velocity of the body increases, the size of the air resistance force also -increases
-Eventually, the air resistance force becomes so large that it is equal to the weight of the body.
-When this happens, the two forces are balanced and the body continues to fall at a constant velocity.
-This constant velocity is called the terminal velocity of the falling body

Question 11

Instantaneous speed

Answer 11

rate of change of distance

Question 12

Instantaneous velocity

Answer 12

the rate of change of displacement.

Question 13

Instantaneous acceleration

Answer 13

rate of change of velocity