1. If raindrops fall vertically at a speed of 3 m/s and you are running horizontally at 4 m>s, show that the drops will hit your face at a speed of 5 m/s. 2. Horizontal forces of 3 N and 4 N act at...

1. If raindrops fall vertically at a speed of 3 m/s and you are running horizontally at 4 m>s, show that the drops will hit your face at a speed of 5 m/s.

2. Horizontal forces of 3 N and 4 N act at right angles on a block of mass 5 kg. Show that the resulting acceleration is 1 m/s².