Contact and non-contact forces

Question 1

Name 8 forces and if they are contact or non-contact.

Answer 1

weight- non contact
upthrust- contact
drag- contact
friction- contact
normal contact force- contact
tension- contact
magnetism- non contact
static electricity- non contact

Question 2

Define scalar and vector quantity

Answer 2

scalar- a quantity that has size(magnitude) only

vector- a quantity that has both size and direction

Question 3

Name 4 scalar quantities and their units

Answer 3

speed- m/s
mass- kg/g
energy- j
distance- m

Question 4

Name 4 vector quantities and their units

Answer 4

velocity- m/s^2
momentum- kg m/s
weight- N
displacement- m