The force applied is 47.3 N
Explanation:
First of all, we start by calculating the acceleration of Hailey, which is given by
where:
v = 3.5 m/s is the final velocity
u = 2 m/s is the initial velocity
t = 2 s is the time elapsed
Substituting, we find the acceleration:
Now we can find the force applied by using Newton's second law:
where
F is the force applied
m = 63 kg is the mass of Hailey+the skate
is the acceleration
Substituting, we find the force:
Learn more about Newton's second law:
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The player would need to use a greater force and take less
Answer:
Length of the chain, l = 0.99 m
Explanation:
Given that,
A playground tire swing has a period of 2.0 s on Earth i.e.
T = 2 s
We need to find the length of this chain. The relationship between the length and the time period is given by :
Where
l = length of chain
g = acceleration due to gravity
l = 0.99 meters
So, the length of the chain is 0.99 meters. Hence, this is the required solution.
Answer:
B
Explanation:
It is not just one of these answers, in fact they all make sense. But the one I learned in school was that when the continents were still one super continent- Pangea, animals fossilized wear the borders of modern day continents were. This later on scientists found half of an animal fossil on the edge of one continent and the other half on the edge of a different continent.
hope this helps
~Lalagrl