Answer:
3.76 N
Explanation:
We are given that two force vectors point in opposite directions.
Let
Because second force act in opposite direction.
We have to find the magnitude of sum of two forces.
We know that triangle law of addition
Resultant sum=
Substitute the values then we get
Resultant sum of two forces=
Resultant sum of two forces=3.76 N
Hence, the magnitude of sum of two forces=3.76 N
Answer:
The kinetic energy of the arrow after release is 89.056 J.
Explanation:
Given that,
Mass of arrow, m = 23 g = 0.023 kg
Velocity of the arrow, v = 88 m/s
The power stroke of the bow is 57 cm. The peak draw weight of the bow is 312 N. We need to find the kinetic energy does the arrow have after release. So, it is given by :
So, the kinetic energy of the arrow after release is 89.056 J. Hence, this is the required solution.
Carl Sagan and biologist Harold Morowitz