On a position-time graph for a particle, suppose the plot starts at some positive position and as the time goes on the curve gets steeper and steeper while curving upwards. Which of the following must be true?
a. The speed of the particle is constant.
c. The speed of the particle is decreasing.
b. The acceleration of the particle is constant.
d. The acceleration of the particle is positive.
Question 2
A car is moving in the positive direction along a straight highway and accelerates at a constant rate while going from point A to point B. If the acceleration is positive, increasing the speed of the car, when does the position where the average speed equals the instantaneous speed occur during the time interval from A to B? Assume the time interval is T.
a. T/2 from the start of the interval
c. after T/2 from the start of the interval
b. before T/2 from the start of the interval
d. It depends on the speed at the start of the time interval.
human muscles position sitting yoga
Anatomical position of major neck structures
Results from sequential study of two cohorts tested at three ages and at three different points in t
Nonverbal communications convey strong, powerful messages that may be negative or positive.
Plasma insulin binds to receptors on target cells to enter the cells, which starts actions that lead ...
A bus starts from restat a station and accelerates at a rate of 2 m/s^2 for 15 seconds. It then runs