Aradar gun reads the scalar projection of velocity onto the line-of-sight of a moving object. if the radar gun gives a reading of 60 miles per hour for a vehicle measured by a police officer at an angle 20∘ away from the road, what is the actual speed of the vehicle in miles per hour, rounded to two decimal places?

56.38mph

Step-by-step explanation:

I attached a Graphic to make easier understand this problem.

However it is just a trigonometric problem, where

Where \theta is the angle between the line of lecture and the trayectory from the Auto

V= 'Real' Velocity

u = Velocity from Radar.

Solving to V;

the answer is 844

step-by-step explanation:

it is 844 because if you add 836.50 + 7.5 you will get 844

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.