Paper 1 Physics

Question 1

Scalar Quantity

Answer 1

Only requires magnitude e.g Force and Weight

Question 2

Velocity Defention

Answer 2

The speed of an object in a particular direction

Question 3

Vector Quanatity

Answer 3

Magnitude and direction e.g Force and Velocity

Question 4

Typical Speeds

Answer 4

Walking = 1.5 m/s
Cycling = 7 m/s
Running = 5m/s
Car = 13 - 30 m/s

Question 5

Weight definition

Answer 5

The force of gravity

Question 6

Stopping distance equation

Answer 6

Thinking Distance + Braking Distance

Question 7

Momentum Equation

Answer 7

Mass x Velocity

p = m x v

Question 8

Efficiency Equation

Answer 8

Useful / Total x 100

Question 9

Inertial mass definition

Answer 9

The measure of how difficult it is to change the velocity of an object

Question 10

Newtons third law in collision

Answer 10

Equal Magnitude and opposite direction

Question 11

Gravitational Potential Energy Equation

Answer 11

GPE = Mass x Gravity x Change in vertical height

Question 12

Kinetic Energy Equation

Answer 12

1/2 x mass x velocity squared

Question 13

Conservation of Energy Definition

Answer 13

Energy can be transferred usefully or stored

Question 14

How can efficiency increase

Answer 14

Reducing wasted energy transfers

Question 15

Frequency in a wave definition

Answer 15

Number of waves produced each second

Question 16

Longitudinal waves and transverse waves difference

Answer 16

Longitudinal waves = Vibrations are parallel to the direction of the wave
Transverse waves = Vibrations are at right angles to the direction of the wave

Question 17

Wave speed Equation 1

Answer 17

Frequency x Wavelength

Question 18

Wave speed Equation 2

Answer 18

Distance/Time

Question 19

Ultrasound Definition

Answer 19

Sound with frequency above 20,000Hz

Question 20

Infrasound definition

Answer 20

Sound with frequency less than 20Hz

Question 21

Depth calculation tip

Answer 21

Always divide final distance by 2 if wave has travelled twice

Question 22

Uses of ultrasound

Answer 22

. Foetal Scanning

. Muscle and joint pain

Question 23

Sound Waves in ear

Answer 23

Ear drum vibrates and loss of hair cells weakens the ability to hear higher frequencies

Question 24

Why telescoped are outsides earths atmosphere

Answer 24

Clearer view of planets, stars and galaxies

Question 25

Red shift definition

Answer 25

Space between the earth and the galaxy expanding