What evidence contradicts the theory that moving two-ton stones was physically impossible for the egyptians, and must have been
1 answer:
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consider the right direction as positive and left direction as negative.
M = mass of the ball = 5 kg
m = mass of stone = 1.50 kg
= initial velocity of the ball before collision = 0 m/s
= initial velocity of the stone before collision = 12 m/s
= final velocity of the ball after collision = ?
= final velocity of the stone after collision = - 8.50 m/s
using conservation of momentum
M + m
= M
+ m
(5) (0) + (1.5) (12) = 5 + (1.50) (- 8.50)
= 6.15 m/s
h = height gained by the ball
using conservation of energy
Potential energy gained by ball at Top = kinetic energy at the bottom
Mgh = (0.5) M
(9.8) h = (0.5) (6.15)²
h = 1.93 m
Acceleration measures how fast the speed changes over time.
So, over 10s, the aircraft's speed changes by 3
* 10s
So, the change is 30
Note that the one of the second units cancels out in the answer.
So, over 10s, the aircraft's speed changes by 3
So, the change is 30
Note that the one of the second units cancels out in the answer.