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timofeeve [1]
3 years ago
5

Hey help me and thanks in advance if you do​

Physics
2 answers:
blsea [12.9K]3 years ago
3 0

P = W / t

2000 = 30000 / t

t = 30000/2000

t = 30/2

t = 15 seconds

Ganezh [65]3 years ago
3 0

Explanation:

work(w)=30000J

power(p)=2000W

time taken(t)=?

now,

  • p=w/t
  • t=w/p
  • t=30000/2000
  • t=15 sec

hope it helps.

<h2>stay safe healthy and happy.</h2>
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Solve for v :

v^2 = \dfrac{(64.0\,\mathrm N)(1.50\,\mathrm m)}{1.500\,\rm kg} \\\\ \implies \boxed{v = 8.00 \dfrac{\rm m}{\rm s}}

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We do the same for part 2, but now we must consider that the initial height is the one achieved in part 1 (y_{02}=1317.26m) and its initial velocity is the one achieved in part 1 (v_{02}=271.6m/s), now in free fall, which means with a downwards acceleration a_{2}=-9,8m/s^2. For the data we have it's faster to use the formula v_f^2=v_0^2+2ad, where d will be the displacement, or difference between maximum height and starting height of part 2, and the final velocity at maximum height we know must be 0m/s, so we have:

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