chap 7 revision practice Q's Flashcards
(22 cards)
when making a graph what should you remember for axis
.you can make you’r max value on the axis go past the one on the table
when answering about the acceleration on the graph what should you say
.a is gradient (statement of what it is)
.gradient is constant and negative (description) s.d
trapezium formula
((a+b)/2)*h
if you have to change axis round and describe the graph
.describe graph through the gradient
you should think of what is required to calculate (formula) and how those things in formula might be affected
Y: X: Calculate the overall velocity and
angle of the
ball as it passes over the net.
S1= 2.51 S2= 1 St =1.15 S=
U= 0 U= 18
V= 5.44 V=
A= -9.8 A =
T=0.555 T= 0.555
convert 150kmh^-1 to ms^-1
(150*10^3)/(3600) = 41.67 ms^-1
what does the y-intercept on a dicplacement time graph equal
initial dicplament
describe decreasing acceleration on a velocity time graph
describe a bouncing ball on a speed-time, velocity-time and acceleration-time graph
what do you do if you want the maximum time of flight of a projectile path and you got the inital velocity of path and angle to the horizontal of it
what increases with speed
air resistance
what would happen to skydiver when he pulls parachute
skydiver doesn’t go up but decealerates
what is an independent, dependent, control variable
- Independent - the variable you change & is unaffected by other variables
- dependent - the variable you measure and depends on other variables
- control - stay the same
for calculating gravity practical, what do we make the y-axis when plotting results
2h/t - from formula s = ut + 1/2at^2
