energy - equations of motions

Question 1

what is the written and literate definition of SUVAT

Answer 1

something that links five variables that can be used to describe the motion of a moving object

s - displacement (m)
u - initial velocity (m/s)
v - final velocity (m/s)
a - acceleration (m/s^2)
t - time (s)

apart from time these are all vector quantities so they can be positive and negative values

Question 2

what are the 4 equations of SUVAT

Answer 2

v = u + at

s = 1/2(u +v)t

s = ut + 1/2at^2

v^2 = u^2 + 2as

Question 3

what happens when it is vertical motion and not horizontal

Answer 3

you would use 9.8 m/s^2 for acceleration because of gravity

Question 4

what are the new rules for vertical motion

Answer 4

at the highest position, the speed of the falling object is 0 m/s^2
for a falling object: u = 0 m/s
for an object thrown up: v = 0 m/s

the object takes the same time for flight and descent, so the total time would be doubled one of these times

an object will land with the same speed if sent up in but the direction is opposite - v = -u