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.
At 87 miles per hour you would be traveling 459,360 feet per hour OR 127.6 feet per second.
That depends on how fast the truck is traveling.
They are traveling at 4.9 mph
You have to be traveling at about 80.67 feet per second.
60 miles per hour = 316800 feet per hour.
You are traveling at 88 feet per second at 60 miles per hour.
You are traveling 70.18 feet every 1.1 seconds at 43.5 mph
10 miles/hour = 14.66667 feet /sec
At 50 miles per hour you are traveling 73.3 feet every second.
200 feet
A mile is 5,280 feet. If you are going 55 miles per hour that is the same as going 290,400 feet per hour. Which is the same as 4,840 feet per minute. Or about 80.7 feet per second. It would thus take about 52.8 seconds to travel 4,260 feet if you were traveling at 55 miles per hour.
At 87 miles per hour you would be traveling 459,360 feet per hour OR 127.6 feet per second.
That depends on how fast the truck is traveling.
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.
If it takes 78 seconds to go 55 feet you are traveling at 0.48 miles per hour.
They are traveling at 4.9 mph
You have to be traveling at about 80.67 feet per second.