Physics B
posted by Isaac
A car, moving along a straight stretch of highway, begins to accelerate at 0.0261 m/s2. It takes the car 48.6 s to cover 1 km.
How fast was the car going when it first
began to accelerate?
Answer in units of m/s
Couldn't find a formula for this :(

bobpursley
d=vi*t+1/2 a t^2
1=vi*48.6+.01305(48.6)^2
solve for vi
Respond to this Question
Similar Questions

physics
Two cars are traveling at the same constant speed v. Car A is moving along a straight section of the road, while B is rounding a circular turn. Which statement is true about the acceleration of the cars? 
physics
A car, moving along a straight stretch of highway, begins to accelerate at 0.0218 m/s 2 . It takes the car 86 s to cover 2 km. How fast was the car going when it ﬁrst began to accelerate? 
physics
Just as a car starts to accelerate from rest with an acceleration of 1.4m/s2,a bus moving with a constant speed of 12m/s passes it in a parallel line. 1.How long the car overtakes the bus. 2.How fast will the car then be going. 3.How … 
physics
A certain car can accelerate from rest to the speed v in time T seconds. (a) If the power output of the car remains constant, how long does it take for the car to accelerate from v to 3v, in terms of T? 
Physics
9)A car, moving along a straight stretch of highway, begins to accelerate at 0.0153 m/s 2 . It takes the car 29.2 s to cover 1 km. How fast was the car going when it ﬁrst began to accelerate? 
Physics
A car, moving along a straight stretch of highway, begins to accelerate at 0.0235 m/s 2 It takes the car 67.8 s to cover 1 km.How fast was the car going when it first began to accelerate? 
Physics
A car, moving along a straight stretch of highway, begins to accelerate at 0.0442 m/s^2. It takes the car 30.8 s to cover 1 km. How fast was the car going when it first began to accelerate? 
Physics
A car, moving along a straight stretch of high way, begins to accelerate at 0.014 m/s2. It takes the car 23.2 s to cover 1 km. How fast was the car going when it first began to accelerate? 
Physics
A car, moving along a straight stretch of high way, begins to accelerate at 0.0377 m/s2. It takes the car 34.3 s to cover 1 km. How fast was the car going when it first began to accelerate? 
Physics
A car is behind a truck going 18 m/s on the highway. The car's driver looks for an opportunity to pass, guessing that his car can accelerate at 0.6 m/s2 and that he has to cover the 20m length of the truck, plus 10m extra space at …