Aball rolls off a horizontal shelf a height h above the floor and takes 0.5s to hit. for the ball to take 1.0s to reach the floor the shelf's height above the floor would have to a) 2h b)3h c) sqrt(2) h d)4h

Agymnast dismounts off the uneven bars in a tuck position with a radius of 0.3m (assume she is a solid sphere) and an angular velocity of 2rev/s. during the dismount she stretches out into the straight position, with a length of 1.5m, (assume she is a uniform rod through the center) for her landing. the gymnast has a mass of 50kg. what is her angular velocity in the straight position?

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

A10 kg box initially at rest is pulled 18 meters across a horizontal, frictionless surface by a 40 n force. what is the block’s final velocity over the 18 meters?