Velocity_____________. when the speed of an object changes, when the direction in which the object is moving changes, or when th
2 answers:
You might be interested in
Answer:
news will reach to the listener who are 42 km apart
Explanation:
given,
distance of the radios from the station = 42 Km
speed of the sound in the air = 343 m/s
distance of the people = 9.26 m
time taken by the signal to reach to the radio
speed of the electromagnetic wave to reach to the people
speed of electromagnetic wave = 3 × 10⁸ m/s
t = 1.4 μs
time taken to reach to the people
t = 27 ms
time taken by the station to radio is less.
hence, news will reach to the listener who are 42 km apart
As we can see in the figure attached here
The velocity of aircraft is given as
at 225 degree
velocity of wind is given as
at 315 degree
so here the net velocity of aircraft will be the vector sum of aircraft speed and wind speed
since in the figure we can see that the two speeds are perpendicular to each other
so we can say that the resultant of two speed can be given by using Pythagoras theorem
so we will have
so net speed of aircraft will be 154 km/h
