(P1) Topic 2- Motion And Forces

Question 1

What is an energy store

Answer 1

Energy something can have

Question 2

What is an energy transfer

Answer 2

Moving energy around

Question 3

What is an energy resource

Answer 3

A way of getting energy

Question 4

What does a distance-time graph show

Answer 4

How far things move in a certain time

Question 5

What does a velocity time graph show

Answer 5

How fast an object moves (acceleration, deceleration)

Question 6

What is Newton’s first law

Answer 6

Objects will remain at constant velocity unless acted upon by a resultant force

Question 7

What is Newton’s second law

Answer 7

Force = mass x acceleration

Question 8

What is Newton’s third law

Answer 8

Every action has an equal and opposite reaction

Question 9

What is momentum measured in

Answer 9

Kilogram metres per second (kgm/s)

Question 10

What is inertia

Answer 10

The ability of an object to resist change of motion

Question 11

Equation for momentum

Answer 11

Momentum = mass x velocity

Question 12

Is momentum a scalar or vector

Answer 12

A vector

Question 13

What is a vector

Answer 13

Something with magnitude and direction

Question 14

What is a scalar

Answer 14

Something with magnitude but not direction

Question 15

What is stopping distance

Answer 15

How far you go whilst trying to stop

Question 16

Equation for stoping distance

Answer 16

Stopping distance = thinking distance + braking distance

Question 17

Equation for distance fallen

Answer 17

Distance fallen = 1/2 x acceleration due to gravity x reaction time squared

Question 18

What is the value for acceleration due to gravity

Answer 18

10

Question 19

Equation for reaction time

Answer 19

Reaction time = square root (2 x distance / 10)

Question 20

Equation for kinetic energy

Answer 20

Kinetic energy = 1/2 x mass x velocity squared

Question 21

Equation for force

Answer 21

Force = change in momentum / time