A car and a truck start from rest at the same instant, with the car initially at some distance behind the truck. The truck has a constant acceleration of 2.10 m/s² and the car an acceleration of 3.40 m/s². The automobile overtakes the truck after the truck has moved 60.0 m.
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- The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with acceleration of -5.40 m/s2 for 4.15 s, making straight skid marks 63.3 m long, all the way to the tree. With what speed (in m/s) does the car then strike the tree? m/sA hare and a tortoise compete in a race over a straight course 1.00 km long. Thetortoise crawls at a speed of 0.200 m/s toward the finish line. The hare runs at a speedof 8.00 m/s toward the Finish line for 0.800 km and then stops to tease the slowmoving tortoise as the tortoise eventually passes by. The hare waits for a while afterthe tortoise passes and then runs toward the finish line again at 8.00 m/s. Both thehare and the tortoise cross the finish line at the exact same instant. Assume bothanimals, when moving, move steadily at their respective speeds. (a) How far is thetortoise from the finish line when the hare resumes the racer (b) For how long in timewas the hare stationary?A truck tractor pulls two trailers, one behind the other, at aconstant speed of 1.00x 102 km/h. It takes 0.600 s for the bigrig to completely pass onto a bridge 4.00 x 102 m long. Forwhat duration of time is all or part of the truck–trailer combinationon the bridge?
- The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with an acceleration of -5.60 m/s² for 4.20 s, making straight skid marks 62.4 m long, all the way to the tree. With what speed does the car then strike the tree?here is my problem, I need help: One simple model for a person running the 100 mm dash is to assume the sprinter runs with constant acceleration until reaching top speed, then maintains that speed through the finish line. If a sprinter reaches his top speed of 11.1 m/sm/s in 2.64 ss , what will be his total time? Express your answer in seconds.A driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with an acceleration of 5.60 m/s2 for 4 seconds, making straight skid marks 62.4 m long, all the way to the tree. With what speed does the car then strike the tree?
- The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with an acceleration of 5.60 m/s2 for 4.20 s, making straight skid marks 62.4 m long, all the way to the tree. With what speed does the car then strike the tree?A teenager has a car that speeds up at 3.00 m/s² and slows down at - 4.50 m/s². On a trip to the store, he ac- celerates from rest to 12.0 m/s, drives at a constant speed for 5.00 s, and then comes to a momentary stop at an intersection. He then accelerates to 18.0 m/s, drives at a constant speed for 20.0 s, slows down for 2.67 s, continues for 4.00 s at this speed, and then comes to a stop. (a) How long does the trip take? (b) How far has he traveled? (c) What is his average speed for the trip? (d) How long would it take to walk to the store and back if he walks at 1.50 m/s?The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with acceleration of -5.25 m/s2 for 4.40 s, making straight skid marks 64.4 m long, all the way to the tree. With what speed does the car then strike the tree? m/s
- A horse is running across a field. The horse accelerates at 2.00 m/s2 over a distance of 6.70 m. It runs until its speed is 17.6 m/s and continues at this speed. What was the horse's initial speed?One simple model for a person running the 100 mm dash is to assume the sprinter runs with constant acceleration until reaching top speed, then maintains that speed through the finish line. If a sprinter reaches his top speed of 11.1 m/sm/s in 2.44 ss , what will be his total time?A sports car starts from rest at an intersection and acceleratestoward the east on a straight road at 8.0 m/s2. Just as the sportscar starts to move, a bus traveling east at a constant 18 m/s on the samestraight road passes the sports car. When the sports car catches up withand passes the bus, how much time has elapsed