A truck on the freeway originally moving at 6.6 meters/second accelerates uniformly with acceleration a = 2.8 meters/second2 for
1 answer:
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Answer:
Explanation:
The work done and the energy taken
by a heat engine are related to the efficiency
by the expression
The efficiency is =25%, the numerical form of this percentage is 0.25 and the energy taken is
=200J. Replacing in the formula:
Answer:
0.69s
Explanation:
10 cm = 0.1 m
Let t be the time that radial and tangential components of the linear acceleration of a point on the rim be equal in magnitude. At that time we have the angular velocity would be
And so the radial acceleration is
The tangential acceleration is always the same since angular acceleration is constant:
For these 2 quantities to be the same