Homework Statement
The 4.00kg block in the figure (Intro 1 figure) is attached to a vertical rod by means of two strings. When the system rotates about the axis of the rod, the strings are extended as shown in the diagram and the tension in the upper string is 82.0 N.
Homework...
In an action-adventure film, the hero is supposed to throw a grenade from his car, which is going 90.0 km/h, to his enemy's car, which is going 127 km/h. The enemy's car is 15.6 m in front of the hero's when he let's go of the grenade.
If the hero throws the grenade so its initial velocity...