forces

Question 1

contact force

Answer 1

a force that arises when objects are touching

Question 2

non contact force

Answer 2

a force that arises even though objects are not touching

Question 3

upthrust

Answer 3

upward force acting on an object in a fluid

Question 4

molecule

Answer 4

two or more atoms joined together

Question 5

tension

Answer 5

a force applied to a material that tries to stretch it

Question 6

resultant force

Answer 6

single force that has the same effect on an object as the set of forces it replaces

Question 7

when forces are balanced

Answer 7

remain stationary,move at the same speed

Question 8

force that are unbalanced

Answer 8

start to move, speed up,slow down or change direction

Question 9

drag

Answer 9

the resistive force a gas or liquid

Question 10

streamlined

Answer 10

has a shape that helps reduce drag or friction in fluids

Question 11

balanced

Answer 11

a force acting on an object that are equal in size but act in opposite directions

Question 12

compression

Answer 12

force squashing or pushing together

Question 13

pascal

Answer 13

unit of pressure

Question 14

calculation for pressure

Answer 14

pressure=force
area

Question 15

density

Answer 15

the amount of mass per unit volume