Given:
mass of the box = 200kg
velocity of the moving box = 5m/s
height of the box = 1m
Required:
The comparison of the kinetic energy and potential energy
Solution:
Kinetic energy can be calculated using the formula:
KE = 0.5(mass)(velocity)²
KE = 0.5(200kg)(5m/s)²
KE = 2500 Joules
Potential energy can be calculated using the formula:
PE = (mass)(gravity)(height)
PE = (200kg)(9.8m/s²)(1m)
PE = 1960 Joules
At the given conditions, the kinetic energy is greater than the potential energy. This means that the total energy is spent to move horizontally rather than vertically.
Answer:
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Answer:
0.012 m
Explanation:
m = mass of the marble = 0.0265 kg
M = mass of the pendulum = 0.250 kg
v = initial velocity of the marble before collision = 5.05 m/s
V = final velocity of marble-pendulum combination after the collision = ?
using conservation of momentum
m v = (m + M) V
(0.0265) (5.05) = (0.0265 + 0.250) V
V = 0.484 m/s
h = height gained by the marble-pendulum combination
Using conservation of energy
Potential energy gained by the combination = Kinetic energy of the combination just after collision
(m + M) gh = (0.5) (m + M) V²
gh = (0.5) V²
(9.8) h = (0.5) (0.484)²
h = 0.012 m
Answer:
Explanation:
The direction of the vector implies only its angle, not its magnitude. The direction of the vector is found in
so
but since we are in QII (where x is negative and y is positive) we have to add 180 to this number to get a direction of 165.5 degrees
True is the anwser to your question
Hope this helps