Which of the following would experience induced magnetism  mosteasily?                 a.  air      b.  copper      c.  permalloy      d.  aluminum

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

A100 kg running back runs at 5m/s into a stationary linebacker. it takes 0.5 for the running back to be completely stopped

A980-kg sports car collides into the rear end of a 2300-kg suv stopped at a red light. the bumpers lock, the brakes are locked, and the two cars skid forward 2.6m before stopping.the police officer, estimating the coefficient of kinetic friction between tires and road to be 0.80, calculates the speed of the sports car at impact. what was that speed?