Answer:
Approximately 
.
Explanation:
The formula for the kinetic energy 
of an object is:
,
where
is the mass of that object, and
is the speed of that object.
Important: Joule (
) is the standard unit for energy. The formula for requires two inputs: mass and speed. The standard unit of mass is 
while the standard unit for speed is 
. If both inputs are in standard units, then the output (kinetic energy) will also be in the standard unit (that is: joules,
Convert the unit of the arrow's mass to standard unit:
.
Initial of this arrow:
.
That's the same as the energy output of this bow. Hence, the efficiency of energy transfer will be:
.
A natural frequency of vibrations determined by the physical parameters of the vibrating object.
Answer: speed is the distance traveled by an object but velocity is the distance traveled per unit of time in a particular direction.
Explanation:
V = Ed
E = v/d
so electric field strength and distance are inversely propotional. if we increase the distance electric field will decrease. if we decrease the distance electric field will increase.
Kinetic energy = 1/2 x mass x speed^
= 1/2 x 85 x 10 x 10
= 4250
