You walk 4.5 km in one direction then make a 45 degree turn to the right and walk another 6.4 km what is the magnitude of your d
1 answer:
Answer:
The magnitude of your displacement is 4.52 Km
Explanation:
Initially you walk 4.5 km in one direction. Then after turning to 45 degrees then you walk 6.4 km
So let us use cosine formula to find the distance
Distance =
Substituting the given values
Distance =
Distance =
Distance =
Distance =
Distance =
Distance = 4.52 km
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Total momentum after the collision: +200 kg m/s to the right
Explanation:
We can answer this question by using the law of conservation of momentum, which states that for an isolated system (=no external forces acting on the system), the total momentum is conserved.
Mathematically,
where
is the total momentum before the collision
is the total momentum after the collision
In this problem, the system consists of two hockey players. Before the collision, their total momentum is
(to the right)
Therefore, according to the law of conservation of momentum, their total momentum after the collision must be the same:
And given that the sign is +, the direction is still the same, therefore to the right.
Learn more about momentum:
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