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ludmilkaskok [199]
3 years ago
15

19. A person pushes with 6.0 N for 4.0 seconds on a 2.0 kg object.

Physics
1 answer:
hram777 [196]3 years ago
5 0

Answer:24NS

Explanation:

Impulse=force x time

Impulse=6 x 4

Impulse=24NS

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a 230 kg roller coaster reaches the top of the steepest hill with a speed of 6.2 km/h. It then descends the hill, which is at an
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Energy at top=Energy at bottom

\Rightarrow K_t+U_t=K_b+U_b\\\Rightarrow \dfrac{1}{2}mu^2+mgh=K_b+0\\\\\Rightarrow K_b=0.5\times 230\times 1.72^2+230\times 9.8\times 36.06\\\Rightarrow K_b=340.216+81,279.24\\\Rightarrow K_b=81,619.456\ J\\\Rightarrow K_b=81.619\ kJ

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