For typical rubber-on-concrete friction, what is the shortest time in which a car could accelerate from 0 to 50 mph

Ameter stick is pivoted at the 0.50-m line. a 3.0-kg object is hung from the 0.15-m line. where should a 5.0-kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)?

Suppose while hauling rocks, you accidentally drop one. it breaks apart in flat, planar sections. what type of rock did you just drop? 20 points

If forces acting on an object are unbalanced. true or false