The line that is drawn perpendicular to the point at which a wave intersects a boundary is known as the _____.
1 answer:
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The speed of the mass : <em><u>v = 0.316 m/s</u></em>
<h3>Further explanation</h3>The energy used to press a spring is included as the potential energy
Can be formulated:
Ep= potential energy
k = spring constant
x = change in spring length
If the spring is released from its pressure, this potential energy will turn into kinetic energy
so applies the law of conservation of mechanical energy (Em)
Ek = Ep
A mass of 2 kg is attached to a spring, a spring constant of 20 N/m, and the spring is compressed 0.1 m past its natural length.
m = 2 kg
k = 20 N/m
x = 0.1 m
Hooke's law
Keywords : spring,mass, spring constant,compressed position
Answer:
300N
Explanation:
Given parameters:
Mass of car = 1500kg
Initial velocity = 0m/s
Distance covered = 45m
Time = 15s
Unknown:
Net force applied = ?
Solution:
From Newton's second law:
Force = mass x acceleration
Force = mass x
v is the final velocity
u is the initial velocity
t is the time taken
Final velocity = =3m/s
Force = 1500 x = 300N