A rock falls for 3 seconds. What was its velocity when it hit the ground?

Orque can be calculated by multiplying the force (n) applied at 90? to the lever arm at a distance (m) from the pivot point (point of rotation), the compound si unit for the torque is n? m. if the force (at 90? to the lever arm) applied is 15 n and it is applied at 2.0 m from the pivot point (point of rotation), what is the torque on the lever?

Which of the following is not am example of a polymer? protein nylon kevlar concreta

Ain is , is 's of ? 0.62 0.79 1.27 1.50