Practice Interpreting p-t Graphs This graph represents a car moving along a straight path.
Remember: The slope of the line represents its velocity.
1. In which section is the
car at rest?
b
12
position (m) 8
d
a
4
2. In which sections is the
car moving forward?
Plug-in
and
0
0
2
4
6
8
10
12
14
time (s)
3. What is the total distance the car has traveled?
Formu
4. What is the velocity of the car in each section?
a
b
d

Identical marbles are released from the same height on each of the following four frictionless ramps . compare the speed of the marbles at the end of each ramp. explain your reasoning

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.

What was the first instrument to ever record an earthquake?