Velocity vs time graph Time (sec) Displacement (m) Velocity (m/s)
0
0
0
0.5
1.25
5
1
5
10
1.5
11.25
15
How is the velocity related to the time for the given data?
A)
The velocities cannot be determined.
B)
The velocity is decreasing constantly.
The velocity is increasing constantly.
D)
The velocities is a constant throughout.

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.