Abicycle rider sees a car up ahead, and slows down to avoid a collision. he starts off traveling at 15 m s and slows down to 5 m s in 7.5 s. find the acceleration of the bike rider.

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?