imy786
- 321
- 0
i didnt calculate previos parts..so i just made assumption and put any random figure to carry on the next part of the quesiton
imy786 said:i didnt calculate previos parts..so i just made assumption and put any random figure to carry on the next part of the quesiton
imy786 said:i didnt calculate previos parts..so i just made assumption and put any random figure to carry on the next part of the quesiton
imy786 said:(d) Calculate the velocity of the motorcycle at the moment of landing. Give your answer both as the magnitude and direction of the velocity vector and in
component form.
--------------------------------------------------------------------------
2 equations- horizontal and verical motion-
horizontal speed remains constant as there is no acceleration
horizontal speed is= 20cos 11.53= 19.60m/s
vertical motion to calculate vertical speed:
v=
u= 20sin11.52= 4m/s
a= -10
t=2 (time from part c calculated solving quadratc equaiton)
v=u+at
= 4- (20)= -16 m/s = vertical speed
?/
is this vertical speed correct ?
please someone help me do this question URGENT...
imy786 said:(d) Calculate the velocity of the motorcycle at the moment of landing. Give your answer both as the magnitude and direction of the velocity vector and in
component form.
--------------------------------------------------
total velocity= adding both vector velocity
horizontal=19.60 m/s
vertical speed= -16
inverse tan (-16/19.6) = angle= -39.22
total velocity= horizontal +vertical = 19.6- 16 =3.6 m/s
magnitude of velocity is 3.6 m/s at angle -39.2 degrees direction.
is this correct?
angle being a minus ?should that be ok...?
imy786 said:ow...i was calculating using vectors...
a2+b2= c2...
hage- iv done a leve maths and physics ...so i aint a total beginer...
sqaure root of (19.6^2 + 16^2) = 25m/s is the total velocity at -39.2 degrees
with respect to the horizontal