5. wiley e. coyote (25 kg) is moving 10 m/s when - id525103792244 от brianna8739 13.05.2021 16:07

Question

Physics: 5. wiley e. coyote (25 kg) is moving 10 m/s when his rocket skates engage, pushing him with a force of 150 n in the direction of movement. how fast is he moving after 4 seconds?

brianna8739 · Accepted Answer

-- The output work (energy) is (200 N) x (5 m) = 1,000 Joules

-- The input work (energy) is (50 N) x (25 m) = 1,250 Joules

-- Efficiency = (useful energy output) / (energy input)

Efficiency = (1,000 J) / (1,250 J)

Efficiency = 0.8 or 80% (D) .

5. wiley e. coyote (25 kg) is moving 10 m/s when his rocket skates engage, pushing

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