Answer:
a ) option 2 is correct
b) -ve acceleration for upward motion ,0 acceleration at top point ,+ve acceleration on downward motion ...
Explanation:
mark me as brainliest ❤️
Answer:
5kg
Explanation:
The cart with the least amount of mass will result in the fastest acceleration.
Answer:
Angular velocity, 
Explanation:
The mass of the skater, M = 74.0 kg
Mass of each arm,
( since it is 13% of the whole body and each arm is considered)

Mass of the trunk, 

Total moment of Inertia = (Moment of inertia of the arms) + (Moment of inertia of the trunks)


The final moment of inertia of the person:

According to the principle of conservation of angular momentum:

Answer:
lever
Explanation:
because you can push and pull a lever