1. The head of a rattlesnake can accelerate 50.0 m/s in striking a victim. If a car could do

this as well, how long would it take for it to reach a speed of 24.6 m/s from rest?

Respuesta :

Answer: 0.492 s

Explanation:

We can use the following equation to solve this problem:

[tex]V=V_{o}+a.t[/tex]

Where:

[tex]V=24.6 m/s[/tex] is the car’s final velocity

[tex]V_{o}=0 m/s[/tex] is the car’s initial velocity  (it starts from rest)

[tex]a=50 m/s^{2}[/tex] is the car's acceleration  

[tex]t[/tex] is the time we have to find

Isolating [tex]t[/tex]:

[tex]t=\frac{V-V_{o}}{a}[/tex]

[tex]t=\frac{24.6 m/s-0 m/s}{50 m/s^{2}}[/tex]

Finally:

[tex]t=0.492 s[/tex]