On planet X, an object weighs 7.04 N. Onplanet B where the magnitude of the free-fallacceleration is 1.91g(whereg= 9.8 m/s2isthe
1 answer:
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Answer:
It takes 1600 seconds or hours to travel a distance of 20 km.
Explanation:
Given:
Speed of the motorcycle,
Distance traveled by the motorcycle,
We know that,
∴
Plug in 20 km for and 45 km/h for
. Solve for time.
⇒ Time =
Therefore, the time taken to travel a distance of 20 km is 1600 seconds or hours.
Answer:
New angular speed changes from 16 rpm to 19.95 rpm
Explanation:
In the given system the angular momentum of the system is conserved
initial angular momentum of the system
When 28 kg child moves to the center the moment of inertia changes thus we have
Equating initial and final angular momentum we get