LIULIS. What would happen to speed if distance increased in the same amount of time?
1 answer:
Answer:
The speed will be increased.
Explanation:
We can better understand this analysis, if we use numerical values and remember the expression or formula for speed. We know that speed is defined as the distance travelled at a given time.
So if we have the distance x = 4 [m] and the time 2 [s], the speed will be:
v = (4/2) = 2 [m/s]
And if we increase the distance to x = 10 [m] at the same time 2[s], the speed will be:
v = (10/2) = 5 [m/s]
So we can see that the speed is increased.
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Answer:
2. at the lowest point
Explanation:
The motion of the pendulum is a continuous conversion between kinetic energy (KE) and gravitational potential energy (GPE). This is because the mechanical energy of the pendulum, which is sum of KE and GPE, is constant:
E = KE + GPE = const.
Therefore, when KE is maximum, GPE is minimum, and viceversa.
So, the point of the motion where the KE is maximum is where the GPE is minimum: and since the GPE is directly proportional to the heigth of the bob:
we see that GPE is minimum when the bob is at the lowest point,so the correct answer is
2. at the lowest point