- #1
tchronos
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Hi, i have some questions for the following problems.
A car accelerate at -1.9 m/s2. Traveling at a constant velocity of 32 m/s, this car comes up behind a car traveling at a constant velocity of11 m/s.
a) How close to the slower car can the driver of the faster car come before applying his brakes and still avoid a collision?
b) At what time does the inevitable collision of the two cars occur?
c) How far beyond its position at t = 0 does the slower car get before it is hit?
so the |a1| = 1.9 m/s2
v1 = 32 m/s
v2 = 11 m/s.
Since it accelerates in a negative direction then it is deccelerating at a constant rate. For every second the velocity with decrease by 1.9 until it crashes with the second car with has a constant velocity. Now I don't understand what the question is asking for part a)
Can anyone help? thanks
A car accelerate at -1.9 m/s2. Traveling at a constant velocity of 32 m/s, this car comes up behind a car traveling at a constant velocity of11 m/s.
a) How close to the slower car can the driver of the faster car come before applying his brakes and still avoid a collision?
b) At what time does the inevitable collision of the two cars occur?
c) How far beyond its position at t = 0 does the slower car get before it is hit?
so the |a1| = 1.9 m/s2
v1 = 32 m/s
v2 = 11 m/s.
Since it accelerates in a negative direction then it is deccelerating at a constant rate. For every second the velocity with decrease by 1.9 until it crashes with the second car with has a constant velocity. Now I don't understand what the question is asking for part a)
Can anyone help? thanks