Acceleration and Forces

Question 1

define speed

Answer 1

scalar property when something is fast or slow

Question 2

define velocity

Answer 2

vector with speed and direction

Question 3

equation for speed

Answer 3

distance/time

Question 4

equation for velocity

Answer 4

displacement/time

Question 5

define acceleration

Answer 5

change in velocity over time

Question 6

equation for acceleration

Answer 6

delta v / time

Question 7

define field force

Answer 7

force that works at a distance

Question 8

define contact force

Answer 8

force that seems to work through touching

Question 9

what are the four fundamental forces of nature

Answer 9

strong
electromagnetic
weak
gravity

Question 10

what is the effect of strong force

Answer 10

holds nuclei together

Question 11

what is the effect of electromagnetic force

Answer 11

matter interaction

Question 12

effect of weak force

Answer 12

nucleus decay

Question 13

effect of gravity

Answer 13

holds galaxies and planets together

Question 14

what is the relative strength of strong force

Answer 14

1

Question 15

what is the realtive strength of electromagnetic force

Answer 15

10^-2

Question 16

what is the relative strength of weak force

Answer 16

10^-5

Question 17

what is the relative strength of gravity

Answer 17

10^-39

Question 18

range of strong force

Answer 18

10^-15 metres

Question 19

range of electromagnetic force

Answer 19

infinite

Question 20

range of weak force

Answer 20

10^-17 metres

Question 21

range of gravity

Answer 21

infinite

Question 22

what is newton’s first law of motion

Answer 22

a body remains at rest, or moves in a straight line at constant speed unless acted upon by a force

Question 23

what is the use of newton’s first law in chemistry

Answer 23

determining the equilibrium position of atoms within a solid