I have a physics question.
Q. in the winter sport of curling, two teams alternate sliding 20 kg stones on an icy surface in an attempt to end up with the stone closet to the center of a target painted on the ice. during one turn, a player releases a stone that travels 27.9 m before coming to rest. the friction force acting on the stone is 2.0 N. what was the speed of the stone when the player released it?

Aspecial electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop ride at an amusement park. the sensor measures the magnitude of the normal force that the seat exerts on a rider. the loop-the-loop ride is in the vertical plane and its radius is 23 m. sitting on the seat before the ride starts, a rider is level and stationary, and the electronic sensor reads 740 n. at the top of the loop, the rider is upside down and moving, and the sensor reads 370 n. what is the speed of the rider at the top of the loop?

Aplane flying horizontally at an altitude of 1 mile and a speed of of 500mih passes directly over a radar station. find the rate at which the distance from the plane to the station is increasing when it is 2mi away from the station.

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a. true or b. false