85 + 45 = 130
130km in 1.5 hours
130 / 1.5 = 86.6666666666666
the average speed was:
86.6666666666666
a brainliest would be appreciated
Answer:
Time period is the time taken by the body to complete one oscillation and it is noted more than once to get accurate reading from averaging of all the observed values.
Answer:
A.
Explanation:
All the arrows align to the point right
Natural Selection is that the species that are best suited or adapted to their environment or most likely to survive and reproduce
And after a few generations evolution occurs
Explanation:
The motion of a particle is defined by the relation as:
........(1)
Differentiating equation (1) wrt t we get:
............(2)
When v = 2 ft/s
t₁ = 2.26 s
and t₂ = 0.73 s
Put the value of t₁ in equation (1) as :
x₁ = 14.23 ft
Put the value of t₂ in equation (1) as :
x₁ = 14.74 ft
For acceleration differentiate equation (2) wrt t as :
a = 12 t - 18.........(3)
Put t₁ and t₂ in equation 3 one by one as :
Hence, this is the required solution.