Calculate momentum- what is the momentum of the wooden ball after the collision?

Truck traveling west on the highway experiences an acceleration to the east. what could be the cause of this acceleration

In what direction does an applied force move an object

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.