-- You know how much work the bow does on the arrow.
Work = (force) x (distance) = (65 N) x (0.9 m)
-- THAT's the energy the arrow got from the bow, so
THAT's the kinetic energy the arrow has as it leaves the bow.
KE = (1/2) (m) (speed)²
so (1/2) (0.075 kg) (speed)² = (65 N) x (0.9 m)
The speed is the only thing left unknown in this mess.
I'm sure you can handle it from here, and find the speed.
Answer:
5m/s
Explanation:
p=mv, or momentum (p) is equal to mass (m) times velocity (v).
so:
m=5Kg
p=25Kgm/s
v=p÷m
v=25÷5
v=5m/s
hoped this helped :)
Answer: Stationary reference points are used to determine if a object is in motion because if the reference point is still,you will be able to see if the object is in motion. If you had a reference point that wasn't stationary, you wouldn't be able to tell if the object was in motion.
Explanation:
Stationary reference points are used to determine if a object is in motion because if the reference point is still,you will be able to see if the object is in motion. If you had a reference point that wasn't stationary, you wouldn't be able to tell if the object was in motion.
The central vacuole<span> is a </span>cellular<span> organelle found in</span>plant cells<span>. It is often the largest organelle in the </span>cell<span>. It is surrounded by a membrane and functions to hold materials and wastes. It also functions to maintain the proper pressure within the </span>plant cells<span> to provide structure and support for the growing</span>plant<span>.</span>
