A car, a bicycle, a bus, and a motorcycle are moving parallel to each other on a road. Each vehicle is traveling at the same spe
1 answer:
Answer:
The <u>bus </u>will have the highest kinetic energy, while the <u>bicycle </u>will have the lowest kinetic energy.
Explanation:
The energy possessed by a body due to motion is known as kinetic energy. It depends upon the mass of a body and its speed.
It is given that a car, a bicycle, a bus and a motorcycle are moving parallel to each other at the same speed.
Since, the speed is same for all the vehicles, the kinetic energy will depend on the mass.
Mass of a bus is greatest and of a bicycle is the smallest. Thus, kinetic energy of bus would be highest and of the bicycle -lowest.
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Answer:
False
Explanation:
Let's consider the definition of the angular momentum,
where is the moment of inertia for a rigid body. Now, this moment of inertia could change if we change the axis of rotation, because "r" is defined as the distance between the puntual mass and the nearest point on the axis of rotation, but still it's going to have some value. On the other hand,
so
unless
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.
In conclusion, a rigid body could rotate about certain axis, generating an angular momentum, but if you choose another axis, there could be some parts of the rigid body rotating around the new axis, especially if there is a projection of the old axis in the new one.