A student releases a marble from the top of a 190cm ramp. The marble increases speed steadily and reaches the bottom of the ramp in 5.00s. what was the magnitude of the marbles acceleration?
what was the marbles final speed?

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.

D.) a wheel barrow, due to the fact that where the weight is in the middle, the fulcrum is at the wheel, and the input force is at the other end

Answer (b) high pressure produced by the clouds

Iknow 5.) is  alveoli  because  any of the many tiny air sacs of the lungs which allow for rapid gaseous exchange.