Answer:
v = 20 m/s
Explanation:
Given that :
Initial Velocity of cars (u) = 0
Car with smaller mass = m
Car with larger mass = 2m
Final velocity of smaller mass = v
Final velocity of larger mass v2 = 10
Using the relation :
Initial momentum = final momentum
m1u1 + m2u2 = m1v1 + m2v2
Since u = 0
m1v1 + m2v2 = 0
mv + 2m * 10 = 0
mv + 20m = 0
mv = 20m
v = 20m / m
v = 20
Final velocity of larger mass car will be 20 m/s
Answer:
A biased person favors one side or issue over another.
Explanation:
For example say there is a soccer game going on Blue Team VS Red Team,
and the ref wants the Blue Team to win, so he helps the Blue Team win the calling fouls for them or not calling foals for the Red Team.
He is being biased.
Answer:
The work is required to stretch it from 8 m to 16 m is 192 N-m
Explanation:
Given that,
Natural length = 8 m
Force F = 12 N
After stretched,
length = 10 m
We need to calculate the elongation
Using hook's law
The restoring force is directly proportional to the displacement.
Where, k = spring constant
Negative sign shows the displacement in opposite direction
Now, The value of k is
When stretch the string from 8 m to 16 m.
Then the elongation is
Now, The work is required to stretch it from 8 m to 16 m
Where, k = spring constant
x = elongation
Hence, The work is required to stretch it from 8 m to 16 m is 192 N-m
Answer: The first one
Explanation:
Because it’s the higher frequency