Answer:
there are 1,000m in a km, so 200km is 200,000m
200,000m/10m/s = 20,000s
Explanation:
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Answer:
68.2 Quadrillion meters
Explanation:
A lightyear is the distance that light travels in one year.
Speed of light is 
So light covers 300,000,000 meters in one second.
One year has 31536000 seconds so , light covers

so 7.2 light years is

so 7.2 light years is
6.82 x 10^(16) meters or
68.2 Quadrillion meters
The centripetal accelaration is increased by a factor of 4
Answer:
Period is 1.57 seconds
Explanation:
From simple harmonic motion :

T = 2π√(2.5÷10)
T = 0.25 × 2π
T = 1.57 s