# 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

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.

in progress 0
1 year 2021-09-03T19:32:23+00:00 1 Answers 11 views 0

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,

$$acceleration = \frac{speed}{time} \\\\acceleration= \frac{40.23}{0.7}$$

$$acceleration = -57.47m/s^{2}$$