Answer:
13.1 m/s
Explanation:
Given that a baseball is tossed up into the air at an initial velocity 18 m/s. The height of the baseball at time t in seconds is given by h(t) = 18t−4.9t 2 (in meters).
a) What is the average velocity for [1,1.5]?
To calculate the velocity travelled by the ball, differentiate the function.
dh/dt = 18 - 9.8t
Substitute t for 1 in the above Differential function
dh/dt = 18 - 9.8 (1)
But dh/dt = velocity
V = 18 - 9.8
V = 8.2 m/s
Average velocity = ( U + V ) / 2
Average velocity = (18 + 8.2)/2
Average velocity = 26.2/2
Average velocity = 13.1 m/s
Energy transformation or conversion
Answer:
I think maybe C. They require a large amount of land disturbance and potential displacement of people
Explanation:
Hope this helps.
Answer:
The value of θ can be determined by slope of graph as function of square of time.
Explanation:
Lets take
Mass = m
Angle of inclination =θ
From diagram
mg sinθ = m a
So
a=g sinθ
We know that
Given that block is in rest position initially.
u= 0
We can say that
S∝ t² If we assume that t and x and S as y y= m x
Here slope ,m
So the value of θ can be determined by slope of graph as function of square of time.