science force and motion Flashcards
1
Q
friction
A
force that opposes motion
2
Q
gravity
A
force of attraction between two objects with math
3
Q
speed=
A
d/t
distance traveled in a certain amount of time
4
Q
velocity
A
d/t
direction of motion
5
Q
acceleration
A
vf-vi/t
change in speed or direction
6
Q
how do you know if something is in motion
A
change in its position
7
Q
it an object is staying at the same speed, its accelerating?”??
A
no, no change in speed or direction
8
Q
average speed
A
dividing total distance by total time it takes
9
Q
constant speed
A
objects speednever changes while it’s in motion
10
Q
a plane travels 345 km in 8 hrs
A
s= 345/8
11
Q
car starts at 10 and accelerates to 35mph in 5 sec
A
a=35-10/5
12
Q
bike starts is going 5 mph in 3 sec
A
v=5/3
