There are several ways to give an object potential energy. One can move the object against the force of gravity to increase. One can also stretch an object out or put pressure on it.
According to the formula you have given us to work with . . .
1). The airplane's acceleration is
(80 m/s north - zero) / (20 sec) = 4 m/sec^2 north
2). For the cyclist:
(V-final - zero) / 20sec = 0.5 m/s^2 south
Multiply each side by 20s : V-final = 0.5 m/s^2 south x (20sec) =
10 m/s south
Answer:
protons and neutrons
Explanation:
those particles account for 99.99% of mass
Answer:
before
1. Prepare a handy emergency supply kit
2. Know the earthquake hazard in your area
3. Familiarize yourself with the exit routes
During
1. Do the DUCK, COVER AND HOLD.
2. stay away from trees and posts.
3. stay clam
4. Don't enter damaged buildings
After
1. Check yourself and others for injuries
2. Monitor news through radio and Tv.
Hope this will help you.
