Answer:
The answer to the question is
Its maximum speed is 1.54 m/s
Explanation:
Work done = Kinetic energy
0.5·m·v² = 0.5·k·x²
Where
m = mass
v = velocity
k = spring constant
x = extension of the spring
We note that Force F is given by
F = m·a
Where
a = acceleration due to gravity
= 0.153×9.8 = 1.4994 N
Equating the work done by the force to the work done on the spring gives
Work done = Force × Distance = 1.4994×x = 0.5×k÷x² = 0.5×24.7×x²
x = 1.4994÷12.35 = 0.121 m
Substituting the value of x into the equation below gives
0.5·m·v² = 0.5·k·x²
0.5×0.153×v² = 12.35×0.121²
v² = 0.182÷0.0765 = 2.379
v = 1.54 m/s
I think the answer you’re looking for is
D)
-I hope this helps! Enjoy the rest of your day
1. V = IR
You rearrange it to make I the subject by dividing both sides by R. You get:
I = V / R
I = 10 / 50
= 0.2 A
2. Q = It
Charge = 0.2 x 2
Charge = 0.4 C
Answer:
7.5 seconds
Explanation:
because wattsXtime=Joules so 120X__=900. 900 divided by 120= 7.5
It is absolutely true that when the velocity of an object
changes, the momentum of the object also change. Momentum of any object is
defined as the multiple of velocity of an object and the mass of the object. So
we can easily deduce that momentum is directly proportional to velocity of an object
if the mass of the object remains constant. So it can be seen that if the mass
of the object does not change then any change in velocity is bound to have an
effect on the momentum of the object. We can easily write the equation as
momentum= mass x velocity.