Answer:
-10 m/s^2
Explanation:
Acceleration = Change of velocity over time
25/2.5 = 10 m/s^2
Since we are deccelerating here (Going slower) then the number is written as negative
Answer:
Δx = 30000002.4meters
Explanation:
First you transform km/h into m/s and minutes into seconds
so we have that 28000 km/h = 5555.556m/s
and 90min = 5400s
Then you take the formula for speed when the speed is uniform which is
u = Δx/Δt
5555.556 = Δx/5400
Solving for Δx=30000002.4meters.
Answer:
<em>d. She will be slightly lower than you but moving upward toward you</em>.
Explanation:
Since your swing is slightly shorter than your friend's swing, then you will have more angular speed than your friend. Angular speed increases with a decrease in radius. The closer the body is to the center, the faster the body swings. By the time you would have completed one complete swing back and forth, your friend will just be moving towards you, and she will be slightly lower than you but moving upwards towards you. This principle is the same reason gymnasts pull their limbs closer to their body when they need to swing faster.
Answer B adds salt-free water, thus decreasing the salinity of oceans.
Answer:
D.
Explanation:
its the only answer that has a answer to it.