Answer:
"the force of attraction between two objects"
Explanation:
According to Newton's Universal Law of Gravitation, gravity is a force of attraction acting between objects that possess mass. The fact that we only observe gravitational attraction (as opposed to repulsion) makes gravity unique among the known forces.
False, some adults will know more than your friends as they are already grown up and may have experienced the problem already
The size doesn't matter, the density is always the same. It's 2.07
Answer:
V=28.5m/s
b=V=28.5m/s
c=V=28.5m/s
Explanation:
A slingshot fires a pebble from the top of a building at a speed of 15.0 m/s. The building is 30.0 m tall. Ignoring air resistance, find the speed with which the pebble strikes the ground when the pebble is fired.
(a) horizontally,
(b) vertically straight up,
(c) vertically straight down.
u=15m/s
yi=30m
v=?
yf=0
system=pebble+earth
workdone=0
chnage in energy=0
ki+Ui=Kf+Ui
K=kinetic energy
U=potential energy
1/2mv^2+mgyf=1/2mu^2+mgyi
V^2=u^2+2gyi
V=
V=28.5m/s
b. and c will be the same as a. because the magnitude of the kinetic energy is dependent on the velocity and not the magnitude which the pebble is tilted at