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mafiozo [28]
3 years ago
10

DESPERATEA rocket of mass 40 000 kg takes off and flies to a height of 2.5 km as its engines produce 500 000 N of thrust.

Physics
1 answer:
jek_recluse [69]3 years ago
5 0

Answer:

i=1250000000j

ii=

Explanation:

i . Energy= force × distance

= 500000N × 2500m

= 1250000000j

ii . Force = mass × acceleration

500000N= 40000kg × a

500000÷40000= 12.5m/s^2

S=1/2at^2

2500m=1/2×12.5×t^2

2500m=6.25 ×t^2

2500÷6.25=400

400= t^2

√400= √t^2

t = 20seconds

Speed= distance ÷ time

= 2500÷20

= 125m/s

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