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The size has gotten smaller, they last longer, easier to carry around, safer, etc
Answer:23 seconds
Explanation:
Acceleration(a)=3.87m/s^2
distance(d)=1020m
Initial velocity(u)=0
d=uxt + (axt^2)/2
1020=0xt + (3.87xt^2)/2
1020=(3.87xt^2)/2
Cross multiply
1020x2=3.87xt^2
2040=3.87xt^2
t^2=2040/3.87
t^2=527.13
t=22.95
Time(t) is approximately 23seconds
Potential energy is when something is not in motion but can be,(that's not a good explanation), but the second one is kinetic because it's already moving, so the first one is potential.
Answer: The word is abstract.
Explanation: