118.Apolicemanondutydetectsadropof10% in the pitchof the horn of motion of car as it crosses him if the velocity of sound is 330 metre per second calculate the speed of the car

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Q. A police man on duty detects a drop of

10 %

in the pitch of the motion of car as it crosses him. If the velocity of sound is

330 m / s

. Calculate the speed of the car:

Q. A policeman on duty detects a drop of 10 % in the frequency of motor car as it is crosses him If the velocity of sound is 330 m/s, the speed of the car is

Q. A policeman on duty detects a drop of

10

% in the frequency of the horn of a motor car as it crosses him. If the velocity of sound is

330 m / s

, the speed of the car is :

Car A of mass 1500 kg moving of a velocity of 25 metre per second colloid another car B of mass1000 kg moving at a speed of 15 metre per second. After collision the velocity of car A 20 metre per second car B?

Q. The speed limit for vehicles on a road is 100 Km/hr. A drop of 20% in the pitch of a car horn is detected by a policeman when the car passes him. Does the car driver crosses the speed limit. (Velocity of sound in air = 340 m/s)

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