Change your fuel filter.
Bad speed sensors can cause the car to hesitate when accelerating at speeds below 20 mph. The blockage of the air filters can also cause the car to hesitate when accelerating at speeds below 20 mph.
Bad CV joint on the axle maybe?
10 to 20 mph
The van that is moving from 20 mph to 35 mph
Only if car A runs out of gas first.
At 20 mph, a car is moving at about 29.3 feet per second.
2 secs
There is a thing called a vehicle speed sensor on the car. If the car won't go over 20 mph then that is what it needs.
20 mph = 1,760 feet per minute
There is no such thing as 20 mph acceleration. 20 mph is a velocity. Acceleration is expressed as velocity per unit time e.g. mph per second or mph per minute etc.
20 minutes at 60 mph.
a = (vf - v0)/Δt 10 mph/s = (45 mph - 20 mph)/Δt Δt = 2.5 s