Question

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?

Answer 1

Answer: 0.492 s

Step-by-step explanation:

We can use the following equation to solve this problem:

`V=V_(o)+a.t`

Where:

`V=24.6 m/s` is the car’s final velocity

`V_(o)=0 m/s` is the car’s initial velocity (it starts from rest)

`a=50 m/s^(2)` is the car's acceleration

`t` is the time we have to find

Isolating
`t`:

`t=(V-V_(o))/(a)`

`t=(24.6 m/s-0 m/s)/(50 m/s^(2))`

Finally:

`t=0.492 s`