50 points question (Who is known as father of science)Albert Einstein​

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

The discovery of the electron as a subatomic particle was a result of

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?