Author Question: A pendulum is released from rest at position A and swings toward the vertical under the influence of ... (Read 128 times)

lbcchick · **on:** Jul 28, 2018

A pendulum is released from rest at position A and swings toward the vertical under the influence of gravity as depicted below.

When at position B, which direction most nearly corresponds to the direction of the acceleration?
Enter (9) if the direction cannot be determined.

1.1
2.2
3.3
4.4
5.5
6.6
7.7
8.8
9.9

Question 2

Consider the following situations:
a car slowing down at a stop sign
a ball being swung in a circle at constant speed
a vibrating string
the Moon orbiting the Earth
a skydiver falling at terminal speed
an astronaut in an orbiting space station
a ball rolling down a hill
a person driving down a straight section of highway at
constant speed with her foot on the accelerator
a molecule in the floor of this room

In how many of the situations is the object accelerating?

1.One of the situations.
2.Two of the situations.
3.Three of the situations.
4.Four of the situations.
5.Five of the situations.
6.Six of the situations.
7.Seven of the situations.
8.Eight of the situations.
9.Nine of the situations.
10.None of the situations.