Maintaining an orbit has nothing to do with the satellite's speed.
ANY (tangential) speed is enough to stay in orbit, if the satellite
just stays away from Earth's atmosphere.
If the satellite completely stops moving 'sideways' at all, and just
hangs there, then the forces of gravity between the satellite and
the Earth will pull them together ... the satellite will fall into the
atmosphere and then to the ground.
Answer:
Explanation:
a ) Velocity vs time graph will be a straight line with negative slope , making a slope of 2 because slope of v-t graph gives the value of acceleration.
b ) v = 0 , u = 28 m/s
t = ?
v = u - at
0 = 28 - 2 t
t = 14 s
shuttle velocity will become zero after 14 sec.
c ) v ² = u² - 2 a s
0 = 28² - 2 x 2 x s
s = 28² / 4
= 196 m .
Observe,plan,trial,repeat
I'd say Pencil Sharpener even though it's a wheel and axle AND a wedge
