Height of one roof is 5.97 m below the other roof
now its displacement in vertical direction is given as
solving above for time
now in the same time cat has to cover the distance between two buildings
so here we can say
solving above for speed
so speed of cat is 6.54 m/s
Answer:
This question lacks options, the options are:
A. the number of days the rainwater was allowed to sit
B. the number of times the rainwater was observed
C. the change in the amount of rainwater due to evaporation
D. the change in pH of the rainwater over time
The answer is A
Explanation:
In an experiment, the independent variable is the variable that is changed or manipulated by the experimenter in order to effect a measurable response.
In this experiment, Austin is trying to determine how time changes the pH of standing rainwater. He collects rainwater and distributes it evenly in 5 jars, which he measured the pH at different days using a pH testing kit. Hence, the independent or manipulated variable is THE NUMBER OF DAYS THE RAINWATER WAS ALLOWED TO SIT before measuring their pH.
Answer:
a. 44 m
Explanation:
We don't have the table but we can still answer since the motion is a free-fall motion.
First of all, we calculate the velocity of the body at time t = 4 s, with the equation
where
u = 0 is the initial velocity
g = 9.8 m/s^2 is the acceleration of gravity (we take downward as positive direction)
t is the time
Using t = 4 s,
Now we can calculate the distance covered during the time t = 4 s and t = 5 s using the other suvat equation
where
is the time interval we are considering. Substituting values,
