PLEASE HELP!!! THANKS I GIVE BRAINLIEST !!A student examines the effect of the number of D batteries in a closed circuit on the
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Answer:
The cloud moves 9050 meters to the east in 12.5 minutes.
Explanation:
Let suppose that mass of the cloud is negligible. meaning that effects of gravity are negligible and that altitude of the cloud remains constant. If the cloud drifts at constant velocity, travelled distance is defined by following formula:
(1)
Where:
- Velocity, in meters per second.
- Time, in seconds.
If we know that and
, then the travelled distance after 12.5 minutes is:
The cloud moves 9050 meters to the east in 12.5 minutes.
Answer:
(a) The velocity (v) of the ball when reaches its maximum altitude is zero .
v= 0
(b) The acceleration of an object free fall motion is constant and is equal to the acceleration due to gravity,then, At maximum height the acceleration of ball is g =-9,8 m/s².
(c)velocity of the ball when it returns to the ground :
in direction -y
(d)a=g = -9,8 m/s² : acceleration of the ball when it returns to the ground
Explanation:
Ball Kinematics
We apply the free fall formula:
vf²=v₀²+2*a*y Formula (1)
y:displacement in meters (m)
v₀: initial speed in m/s
vf: final speed in m/s
a: acceleration
Data
v₀ = +5.00 m/s
Problem development
(a) What is its velocity when it reaches its maximum altitude?
in ymax, vf=0 , At maximum height the velocity is zero and the ball falls freely
(b) What is its acceleration at this point?
The acceleration of an object free fall motion is constant and is equal to the acceleration due to gravity,then, At maximum height the acceleration of ball is 9,8 m/s².
g= -9.8 m/s²
c) What is the velocity with which it returns to ground level?
We apply the Formula (1) to calculate the maximum height (h):
Ball movement up
vf²=v₀²+2*a*h
0 = (5)² +2*(-9.8)*h
19.6*h = 25
h= 25/19.6 = 1.275 m
Ball movement down
The distance the ball goes up is equal to the distance it goes down
h= 1.275 m , v₀=0
vf²=v₀²+2*a*h
vf²=0+2*(-9.8)*(-1.275)
in direction -y
(d) What is its acceleration at this point?
a is constant , a= g = -9.8 m/s²