Mrs. Clark (m = 66kg) is dreaming about when the pandemic is over and she can travel someplace foreign. While she is on a Boeing 777-200 with a mass of 200,000 kg that is flying at its cruising speed of 251 m/s, Mrs. Clark gets up to use the bathroom. She walks
towards the back of the plane at a speed of 2 m/s.
a) Will the airplane speed up or slow down as a result of Mrs. clark motion?
b) How much does the airplanes speed change as a result of Mrs. Clarks walk to the back of the plane? please give answer with units of meters per second !

i’m not sure how to figure this out! please give a step by step explanation. WILL GIVE BRAINLIEST!

What happens to light waves from a star as the star moves away from earth?

Athin plate moves between two parallel, horizontal, stationary flat surfaces at a constant velocity of v = 7.5 m/s. the two stationary surfaces are spaced 4 cm apart, and the medium between them is filled with oil whose viscosity is 0.9 n·s/m2. the part of the plate immersed in oil at any given time is 2 m long and 0.5 m wide. if the plate moves through the mid-plane between the surfaces, determine the force required to maintain this motion. what would your response be if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top surface (h1)? if the plate moves through the mid-plane between the surfaces, the force required to maintain the motion will be n. if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top (h1) surface, the force required to maintain the motion would be n.

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island