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!

6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?

To place a communications satellite into a geosynchronous orbit at an altitude of 22,240 mi above the surface of the earth, the satellite first is released from a space shuttle , which is in a circular orbit at an altitude of 185 mi, and then is propelled by an upper-stage booster to its final altitude. as the satellite passes through a, the booster's motor is fired to insert the satellite into an elliptic transfer orbit. the booster is again fired at b to insert the satellite into a geosynchronous orbit. knowing that the second firing increases the speed of the satellite by 4810ft/s, determine (a.) the speed of the satellite as it approaches b on the elliptic transfer orbit, (b.) the increase in speed resulting from the first firing at a.