You ride your bike at a CONSTANT speed of 12 m/s for 100 s from your house to the mailbox. What was your acceleration for the trip? a= (Vf-Vi)/t
3 answers
Since you are riding at a constant speed, there is no change in velocity. Therefore, the final velocity (Vf) is equal to the initial velocity (Vi), and the acceleration is 0 m/s².
A toy race car zooms across the ground with an acceleration of 1.8 m/s^2. After 3 seconds it has a final velocity of 12.2 m/s, what is the toy car's initial velocity? a= (Vf-Vi)/t
We can rearrange the equation a = (Vf - Vi) / t to solve for Vi.
Rearranging the equation, we have Vi = Vf - a * t.
Plugging in the given values, Vi = 12.2 m/s - (1.8 m/s² * 3 s).
Calculating, we have Vi = 12.2 m/s - 5.4 m/s.
Therefore, the toy car's initial velocity is Vi = 6.8 m/s.
Rearranging the equation, we have Vi = Vf - a * t.
Plugging in the given values, Vi = 12.2 m/s - (1.8 m/s² * 3 s).
Calculating, we have Vi = 12.2 m/s - 5.4 m/s.
Therefore, the toy car's initial velocity is Vi = 6.8 m/s.