You are arguing over a cell phone while trailing an unmarked police car by 36 m. Both your car and the police car are traveling at 100 km/h. Your argument diverts your attention from the police car for 2.0 s (long enough for you to look at the phone and yell, "I won't do that!"). At the beginning of that 2.0 s, the police officer begins emergency braking at 5 m/s2.
(a) What is the separation between the two cars when your
attention finally returns? (Hint: This problem might be a bit
easier to solve using the idea of relative velocity.)
26m
(b) Suppose it takes you another 0.4 s to realize your danger and
begin braking. If you too brake at 5 m/s2, what is your
speed when you hit the police car?
km/h
(c) How much time passes between your initial braking and the
collision?
s
(d) How much distance do you cover during this time (i.e., while
braking)?
m
I cannot get it from question b.
You are arguing over a cell phone while trailing an unmarked police car by 36 m....
You are arguing over a cell phone while trailing an unmarked police car by 32 m. Both your car and the police car are traveling at 110 km/h. Your argument diverts your attention from the police car for 2.5 s (long enough for you to look at the phone and yell, "I won't do that!"). At the beginning of that 2.5 s, the police officer begins emergency braking at 5 m/s2. (a) What is the separation between the two cars...
-42 unmarked police car by 25 m; both your car and the police car are traveling at 110 km/h. Your argument diverts your attention from0 the police car for 2.0 s (long enough for you to look at the phone way be and yell, "I won't do that!"). At the beginning of that 2.0 s, the po- lice officer begins braking suddenly at 5.0 m/s. (a) What is the sep- the app aration between the two cars when your attention...
tion when both trains have stopped? is (a 42 You are arguing over a cell phone while trailing an unmarked police car by 25 m; both your car and the police car are traveling at 110 km/h. Your argument diverts your attention from the police car for 2.0 s (long enough for you to look at the phoneW and yell, "I won't do that!"). At the beginning of that 2.0 s, the po- lice officer begins braking suddenly at 5.0...
An unmarked police car traveling a constant 95 km/h is passed by a speeder traveling 140 km/h. Precisely 1.00 s after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 2.60 m/s2 , how much time passes after the police car is passed by a speeder and before the police car overtakes the speeder (assumed moving at constant speed)? Express your answer with the appropriate units.
An unmarked police car traveling a constant 85 km/h is passed by a speeder traveling 136 km/h . Precisely 1.00 s after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 2.30 m/s2 , how much time passes after the police car is passed by a speeder and before the police car overtakes the speeder (assumed moving at constant speed)?
An unmarked police car, traveling a constant 90.0 km/h, is passed by a speeder traveling 166.0 km/h. Precisely 3.40 seconds after the speeder passes, the policeman steps on the accelerator. If the police car's acceleration is 2.1 m/s2, how much time elapses after the police car is passed until it overtakes the speeder (assumed moving at constant speed)?
KHW 2: 2.5-2.8 Problem 2.38 7 ot 28> Constants Part A An unmarked police car traveling a constant 95 km/h is passed by a speeder traveling 129 km/h. Precisely 1.00 s after the speeder passes, the police officer steps on the accelerator, if the police car's acceleration is 2.60 m/s2 how much time passes after the police car is passed by a speeder and before the police car overtakes the speeder (assumed moving at constant speed)? Express your answer with...
An unmarked police car traveling a constant 95 km/hkm/h is passed by a speeder traveling 137 km/hkm/h . Precisely 1.00 ss after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 2.30 m/s2m/s2 , how much time passes after the police car is passed by a speeder and before the police car overtakes the speeder (assumed moving at constant speed)?
An unmarked police car traveling a constant 95 km/h is passed by a speeder traveling 130 km/h. Precisely 1.00 s after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 2.50 m/s^2, how much time passes after the police car is passed by a speeder and before the police car overtakes the speeder (assumed moving at constant speed)?
Spotting a police car, police car you brake a Porsche frem 75 kend to to 45 km/h over displacement of 88 m. @ What is the acceleration, assumed to be constant? 6 What is the elapsed time? @ If you continue to slow down with the acceleration calculated in (a) above, how much time would elapse in bringing the car to rest from 75 km/h? & In (6) above, what distance would be covered? @ Suppose that, on a second...