Aroller coaster will accelerate its riders from rest to 33.5m/s in 4.00 seconds. (a) what is the magnitude of the average acceleration of a rider? (b) what is the average net force on a 45.0 kg rider during these 4.00 seconds?

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Aparticle moves in the xy plane with constant acceleration. at time zero, the particle is at x = 6 m, y = 8.5 m, and has velocity ~vo = (9 m/s) ˆı + (−2.5 m/s) ˆ . the acceleration is given by ~a = (4.5 m/s 2 ) ˆı + (3 m/s 2 ) ˆ . what is the x component of velocity after 3.5 s? answer in units of m/s.

How much hereditary information is contain in a human sex cell