A cyclist is at rest at a traffic light. When the light turns green, he begins accelerating at 2.13 m/s2. How many seconds after the light turns green does he reach a cruising speed of 5.05 m/s?
2 answers
v = a t
Kevin,
I looked up how to get the solution and came up with the formula v = at as Damon says, with V = velocity, A = Acceleration, and T being time. SO velocity = acceleration x time.
In our problem, we are give velocity and acceleration, with the unknown being time.
5.05 = 2.13t
t= 5.05/2.13
That division yields 2.37089202, or approximately 2.37 seconds.
I hope that's right. I used to be a physics expert but that was almost 30 years ago.
I looked up how to get the solution and came up with the formula v = at as Damon says, with V = velocity, A = Acceleration, and T being time. SO velocity = acceleration x time.
In our problem, we are give velocity and acceleration, with the unknown being time.
5.05 = 2.13t
t= 5.05/2.13
That division yields 2.37089202, or approximately 2.37 seconds.
I hope that's right. I used to be a physics expert but that was almost 30 years ago.
3 answers