Question

A car with a crashtest dummy inside travels at 40.23 m/s (90 mph) toward a stone wall during a crash test. When it strikes the wall, the car takes 0.70 s to stop. Calculate the deceleration of the car.

Answer 1

The answer is
`-57.47m/s^(2)`

Step-by-step explanation:

In the question we are to solve for the deceleration of the car on impact.

Given data

`speed= 40.23m/s\\`

`time` =
`0.70second`

To determine the deceleration we apply,

`acceleration = (speed)/(time) \\\\acceleration= (40.23)/(0.7)`

`acceleration = -57.47m/s^(2)`