In speed skating, the ice skates have toe picks at the end of each blade. This allows the athlete to push off from the ice with a high initial force when the race starts. These toe picks produce what type of force?

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?