Physics Unit 1

Question 1

What is Scalar Quantity

Answer 1

A quantity with magnitude only

Question 2

What is a vector quantity

Answer 2

A quantity with magnitude and direction

Question 3

What are the six base quantities

Answer 3

1. Length (m)
2. Mass (Kg)
3. Time (s)
4. Electric Current (A)
5. Temperature (Kelvin)
6. Amount of substance (mol)

Question 4

What is density

Answer 4

Mass per unit of volume

Question 5

How do we calculate density

Answer 5

P = m/V

Question 6

What are the units for density

Answer 6

kg m⁻³

Question 7

How do we calculate the volume for a: cuboid , sphere

Answer 7

Cuboid - V = lwh
Sphere - V= 4/3pieR3

Question 8

How do we convert grams into kilograms

Answer 8

X10-3

Question 9

What is meant by absolute uncertainty

Answer 9

uncertainty in a single measured value

Question 10

How do we calculate percentage uncertainty

Answer 10

%U = absolute U / recorded value

Question 11

What is percentage uncertainty

Answer 11

Absolute Uncertainty / recorded value x 100

Question 12

What is absolute uncertainty

Answer 12

The uncertainty written within the measurement

Question 13

Rule for adding and subtracting with quantities

Answer 13

Add absolute uncertainty

Question 14

Define displacement

Answer 14

Distance moved in a specific direction

Question 15

Define velocity

Answer 15

Rate of change of displacement

Question 16

Define acceleration

Answer 16

Rate of change of velocity

Question 17

Gradient of a displace time graph

Answer 17

Velocity

Question 18

Gradient of a velocity time graph

Answer 18

Acceleration

Question 19

Area under a velocity time graph

Answer 19

Displacement

Question 20

Suvat - v =

Answer 20

u + at

Question 21

Suvat - x=

Answer 21

ut+1/2at^2

Question 22

Suvat - v^2=

Answer 22

u^2+2ax

Question 23

Suvat - x=

Answer 23

(u+v)/2t