sci : force & motion

Question 1

balanced forces

Answer 1

two or more equal forces cancel out each other ( opposite directions )

Question 2

unbalanced forces

Answer 2

when two forces don’t cancel out each other

Question 3

resultant force

Answer 3

opposite direction = subtract
same direction = add

Question 4

the object does not move when ____________

Answer 4

when balanced forces act on an object at rest

Question 5

distance

Answer 5

total length of the path covered by an object

Question 6

displacement

Answer 6

the shortest distance between the initial point and final point of a moving object

Question 7

speed formula

Answer 7

S = Distance traveled / Time taken

Question 8

average speed formula

Answer 8

av speed = total distance / total time taken

Question 9

velocity

Answer 9

is the distance traveled by an object in unit time in a direction

Question 10

uniform motion

Answer 10

travels equal distances in equal intervals of time, constant speed, balanced forces

Question 11

non-uniform

Answer 11

unequal distance, unequal intervals of time, velocity changes, unbalanced force