That depends on how fast the truck is traveling.
when traveling at 55mph, how many feet do you need to stop
It depends on the size of the truck, the load it is hauling, and road conditions. At 35 mph you are traveling 51.3 feet per second. A semi truck with a load and one passenger traveling at 35 MPH will require around 130 feet to stop. I pick up truck with one passenger will require around 92 feet to stop. These figures are for a dry pavement condition.
h w many feet will it stop in
When traveling at 35 mph it will take you 210 feet to come to a complete stop.
When traveling at 35 mph it will take you 210 feet to come to a complete stop
The distance travelled will depend on many factors other than the mass and speed of the truck. For example, the road conditions (wet/dry), the state of the tyres and the brakes.
about 120 ft
about 200 feet... unless your brakes are horrible
On dry roads with ABS, around 46 feet.
If you have another piece of information, like "the truck is slowing down at a rate of 30m/s2", then you would be able to work this out, but without additional information, this question can not be accurately answered.
If there is constant acceleration and deceleration then it would be 33.3 ft to stop