What is the momentum of 70 kg runner traveling at 10 m/s?
2 answers:
Answer : The momentum of 70 kg runner is, 700 kg.m/s
Explanation :
Momentum : It is defined as the motion of a moving body. Or it is defined as the product of mass of velocity of an object.
Formula of momentum is:
where,
p = momentum = ?
m = mass = 70 kg
v = velocity = 10 m/s
Now put all the given values in the above formula, we get:
Therefore, the momentum of 70 kg runner is, 700 kg.m/s
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Answer:
<em>The centripetal acceleration would increase by a factor of 4</em>
<em>Correct choice: B.</em>
Explanation:
<u>Circular Motion</u>
The circular motion is described when an object rotates about a fixed point called center. The distance from the object to the center is the radius. There are other magnitudes in the circular motion like the angular speed, tangent speed, and centripetal acceleration. The formulas are:
If the speed is doubled and the radius is the same, then
The centripetal acceleration would increase by a factor of 4
Correct choice: B.