Answer:
V = 3.54 m/s
Explanation:
Using the conservation of energy:
so:
where w is te weigh of kelly, h the distance that kelly decends, m is the mass of kelly and V the velocity in the lowest position.
So, the mass of kelly is:
m = 425N/9.8 = 43.36 Kg
and h is:
h = 1m-0.36m =0.64m
then, replacing values, we get:
Solving for v:
V = 3.54 m/s
A screw driver rusting when left in a pail of water is a chemical reaction
There must be a conducting wire and electromotive force or free electrons
Particle with more energy move SLOWER than particles with less energy.
Answer:
44 m/s^2
Explanation:
Force, F = 7.95 N
mass, m = 181 g = 0.181 kg
By use of Newton's second law
F = m x a
a = F / m = 7.95 / 0.181 = 44 m/s^2
Thus, the acceleration of the hockey puck is 44 m/s^2.
