49. A mountain biker cycling a trail traveling at 5.4 m/s begins to slow down when she notices a wooden bridge ahead has flooded. If she begins braking when she is 15.0 m from the bridge and comes to a stop just before reaching the bridge, how long did it take her to stop? A 1.8 s B. 2.8 s C. 3.9 s D. 5.6 s

a driver sees a deer in front of his car about 100.0 meters in front of him. the driver was traveling 50.0m/s before applying the brakes and coming to rest right where the deer was. what acceleration did the driver experience? answer in m/s2?

You and your family are going on a road trip to visit your recently married cousin in B.C. The total round trip distance is 2100 km. On the way to B.C., you encounter no setbacks and you are able to drive on average at a constant speed. On the way home from B.C., you encounter a snowstorm and your mom has to slow down to avoid getting into an accident. Thus, your average speed decreases by 10 km/h. If the total driving time was 42 hours, what was your average speed on the way to B.C.? Recall distance = speed x time.

The driver of a truck slams on the brakes when he sees a tree blocking the road. The truck slows down uniformly with an acceleration of -5.60 m/s2 for 4.20 s, making skid marks 62.4 m long that end at the tree. With what speed does the truck then strike the tree?