Apolice car is traveling at a velocity of 18.0 m/s due north, when a car zooms by at a constant velocity of 42.0 m/s due north. after a reaction time of 0.800 s the policeman begins to pursue the speeder with an acceleration of 5.00 m/s2. including the reaction time, how long does it take for the police car to catch up with the speeder?

   t = 10.4 s

Explanation:

given,

velocity of the police car = 18 m/s

reaction time of policeman = 0.8 s

acceleration of the policeman to catch up the speeder = 5 m/s²

time taken to catch the speeder be t₁

distance traveled by the police and the speeder will be same

t₁ = 9.6 s

total time taken by the policeman

     = reaction time + t₁

     = 0.8 + 9.6

     t = 10.4 s

Total time taken by the policeman to catch the speeder is 10.4 s

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."