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Message: <blockquote data-quote="havenater" data-source="post: 2303329" data-attributes="member: 802825">...mph ( 29m/s) a)? a) What is your acceleration (m/s^2) ? - my answer was -3.4b)How far did it take you to stop? distance = 123.7 mSecond part:Now suppose, 3 seconds into your deceleration a tree jumps out in the road right in the front of you and you hit it. It smashes in your hood about 2ft, we will call is 0.50 m exactly. Assume you had your seat-belt , therefore you decelerate at the same rate as the car. What is your rate of deceleration in m/s^2 ? What is this in g's? 1g = 9.8m/s^2?I don't really know what to do here, I don't know if to use another kinematic formula or deceleration formula. Help?</blockquote>