A car accelerating constantly at 5 m s-1 . If its velocity changes from 10 m s-1 to 25 m s-1 , calculate the time taken to reach the final velocity

In a system, when potential energy decreases, then entropy also decreases. true false

What are similarities and differences of reflection, refraction, diffraction and absorption?

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen