Aflea jumps straight up to a maximum height of 0.420 m . what is its initial velocity v0 as it leaves the ground? how long is the flea in the air from the time it jumps to the time it hits the ground?

Initial velocity =

acceleration in the downward direction = -9.8

Final velocity at the highest point = 0

Maximum height reached = 0.420 m

Now, Using third equation of motion:

Velocity with which the flea jumps =

Let the time for half journey be t.

t = 0.2927 s

Total time flea stayed in air =

T = 0.5854 s

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.