62 Un aereo deve distribuire dei pacchi di soccorso agli abitanti di un villaggio, mentre sta volando a \( 300 \mathrm{~km} / \mathrm{h} \) a una quota di \( 95,0 \mathrm{~m} \) da terra. A che distanza, in senso orizzontale, dal villaggio deve sganciare il suo carico, affinché cada esattamente sull'obiettivo?

Problem (1) uniform bar \( A B \) of mass 40 kg and 8 m length is fixed in a vertical plane by two strings \( A D \) Id \( B H \), and a body of mass 60 kg is humg at a point \( C \) on \( A B \) so the bar became in an quilibrium state horizontally, and \( m(\angle D A B)=120^{\circ}, m(<H B A)=150^{\circ} \). find the magnitude fine tension in each of the strings and the length \( \overline{A C} \). Answer.

A 1 km long goods train is running at a speed of 45 \( \mathrm{~km} / \mathrm{h} \). The time taken by this goods train to pass through a 2 km long tunnel is: \( \begin{array}{ll}\text { (A) } 1 \text { minute } & \text { (B) } 2 \text { minutes } \\ \text { (C) } 3 \text { minutes } & \text { (D) } 4 \text { minutes }\end{array} \)

14. A train moving at an average speed of \( 72 \mathrm{~km} / \mathrm{h} \) takes 15 seconds to completely cross a bridge that is 80 metres long (a) Express \( 72 \mathrm{~km} / \mathrm{h} \) in metres per second (b) Find the length of the train in metres ( 2 mk )

El péndulo, de masa \( m \) y largo \( L \), de la figura oscila de modo que la masa describe un movimiento circunferencial uniforme de radio \( R \), con una velocidad tangencial de magnitud \( v \).

A boat is supposed to travel with a velocity vector of \( \langle 40,30\rangle \), but the current has a velocity vector of \( \langle 0,-5\rangle \). What is the boat's actual velocity vector? \( \langle 45,30\rangle \) \( \langle 40,25\rangle \) \( \langle 40,35\rangle \)