1. A plane needs to reach a velocity of 250 kilometers per hour to take-off and leave the runway. If the wind is blowing in the direction of take-off at a velocity of 20 kilometers per hour, what velocity must the plane reach in order to take-
off? Please show all your work and explain your answer.

2.a man started at his house and went to the post office then to the pet store and finally home again. What is the average velocity of this trip took 3 hours please show your work and include correct units

wishi could help sorry have a great day

Explanation:

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.