Physics
posted by Demere .
Suppose a 1,600 kg car is traveling at 20.0 m/s. What average force is needed to stop the car in 4.0 s? Can you explain to me how you got your answer, thank you.

(Avg. Force)*(time) = Momentum change
= 1600*20 kg m/s
Avg. Force = 32,000/4.0 = 8000 Newtons
Respond to this Question
Similar Questions

physics
What average force is required to stop an 1100kg car in 8.0 s if it is traveling at 95 km/h? 
physics
What average force is required to stop an 1900 car in 6.0 if the car is traveling at 80 ? 
physics
A 1000 kg car in neutral gear slow from 15 m/s to a stop in 5.0 s due to the force of friction. A. What was the acceleration of the car. B. What was the car’s initial momentum? 
Math Models
The distance needed to stop a car (d) varies directly with the aquare of the speed of the car (s). If a car traveling 25 mph requires 0 feet to stop, how many feet will be required to stop a car that is traveling at 60 mph? 
Physics
what is the average force needed to stop a car traveling 28m/s in 55m? 
Physics
what is the average force needed to stop a car traveling 28m/s in 55m? 
Physics
what is the average force needed to stop a car (1000kg) traveling 28m/s in 55m? 
physics
a 2250 kg car is traveling at 20 m/s to the west. the force required to stop the car at 7890 N to the east. How long will it take the car to stop? 
physics
A car (mass = 750 kg) is initially moving with velocity 30 m/s. The driver slowly presses on the brakes and bring the car to a stop, traveling 50 m in the process. Calculate the force of friction between the car and the ground that … 
Physics
Calculate the force needed to bring a 1100–kg car to rest from a speed of 83.0 km/h in a distance of 118 m (a fairly typical distance for a nonpanic stop). Suppose instead the car hits a concrete abutment at full speed and is brought …