Answer:
6.5 m above the floor and 5 m above Christine's hand when it reaches the maximum height.
Explanation:
Let g = 10 m/s2 be the gravitational deceleration that affects the ball vertical motion so it comes to the maximum height at 0 speed. We can use the following equation of motion to find out the distance traveled by the ball from where it's thrown:

where v = 0 m/s is the final velocity of the ball when it reaches maximum level,
= 10m/s is the initial velocity of the ball when it starts, g = -10 m/s2 is the deceleration, and
is the distance traveled, which we care looking for:


So the ball is 5 m above Christine' hands when it reaches maximum height, and since the hand is 1.5 m above the floor, the ball is 5 + 1.5 = 6.5 m above the floor when it reaches maximum height.
Answer:

Explanation:
Let
be % of
at time
(time in minutes).
Amount of
in room=Volume of room 
Rate of change of
in room=Volume of room x 

Rate of inflow of
=

Rate of
outflow

Therefore rate of change of
is 
% rate of change is
Therefore we have:

Integrate both:


In
In

Raise both sides to base
,

Initially, there's only 0.25% of
,
Now substitute
and 


Answer:
can i have the toy car after your done asking questions with it
Explanation:
Features of the mobilization monkey
Answer:
a. What impulse act on the ball during its collision with the floor?
b. If the ball is in contact with the floor for 0.04 s, what is the average force of the ball on he floor?
The answers to the question are
a. The impulse acting on the ball during its collision with the floor is
7.076 kg·m/s
b. The average force of the ball on the floor with contact of 0.04 s is
176.9 N
Explanation:
Mass of the ball = 0.61 kg
Initial velocity = -7 m/s
Final velocity = 4.6 m/s
Impulse = Δp = FΔt = mΔv
Where Δt =change in time
m = mass of Average force of he the ball
Δv = velocity change
Therefore impulse = m×(Final velocity - initial velocity)
= 0.61 × (4.6-(-7)) = 0.61×11.6
= 7.076 kg·m/s
b. Average force of the ball on the floor is given by
×Δt = mΔv = 7.076 kg·m/s
where Δt = change in time = 4.6 m/s
Therefore
=mΔv /Δt = 7.076/0.04 = 176.9 kg·m/s²
= 176.9 N