physics/maths help damon or steve or scott
posted by weryiyemi .
A body moves in a straight line,with initial
velocity and uniform acceleration.find how
far it travels in 12sec.,given that it travels
246m in the first 6 sec.,and 69m in the last
3sec.find the initial velocity.
Please show step

physics/maths help damon or steve or scott 
Steve
s(t) = s_{0} + v_{0}t + a/2 t^2
so,
s_{0} + 6v_{0} + 18a = 246
s_{0} + 9v_{0} + 81/2 a = 246+69
Solve for v_{0} 
physics/maths help damon or steve or scott 
Scott
6 V0 + 18 a = 246
V0 + 9 a = V1
3 V1 + 4.5 a = 69
subs ... 3 V0 + 27 a + 4.5 a = 69
... times 2 ... 6 V0 + 63 a = 138
subtract to eliminate V0
... 45 a = 108
... a = 2.4
substitute back to find V0
Respond to this Question
Similar Questions

Chels
What can you say about the motion of a body if its veloctiytime graph is a straight line inclined with the time axis? 
physics
a body moving with a uniform acceleration travels distances of 24m and 64m during the first two equal consecutive intervals of time each of duration 4s.determine the initial velocity and acceleration of moving body. 
physics
a body moves with a uniform velocity of 2m/sec for 5 sec then velocity was uniformly accelerated and a velocity of 10m/sec was achieved in next 5 sec.then brakes were applied uniformly and body comes to rest in next 10 sec.calculate … 
physics
a body moves in a straight line with initial velocity and uniform acceleration.find how far it travels in12s,given that it travel 246m in the 1st 6seconds,and 69m in the last 3seconds.find also the initial velocity. 
physics
a body moves in a straight line with initial velocity and uniform acceleration.find how far it travels in12s,given that it travel 246m in the 1st 6seconds,and 69m in the last 3seconds.find also the initial velocity. 
physics
a body moves in a straight line with initial velocity and uniform acceleration.find how far it travels in12s,given that it travel 246m in the 1st 6seconds,and 69m in the last 3seconds.find also the initial velocity. 
physics
A body moves in a straight line with initial velocity and uniform acceleration. Find how far it travels in 12s, giving that it travels 246m in the first 6seconds and 69m in the last 3seconds. Find also the initial velocity. 
PHYSIC
A BODY MOVING WITH A UNIFORM ACCELERATION. IT TRAVELS 84M IN FIRST 6 SEC AND TRAVEL 180M IN 5 SEC FIND ITS INITIAL VELOCITY AND ACCELERETION 
physics
a particle starts from rest and travels a distance x with uniform acceleration, then it travels a distance 2x with uniform speed ,finally it travels a distance of 3x with uniform retardation and comes to rest. If the whole motion of … 
Physics
a body moving with uniform acceleration travels 84m in First6s and 180m in next 5s . Find the initial velocity and acceleration of body