When a force causes an object to move in the direction of the force blank occurs
1 answer:
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Explanation:
Given that,
The mass of rock, m = 2.35-kg
It was released from rest at a height of 21.4 m.
(a) The kinetic energy is given by :
As the rock was at rest initially, it means, its kinetic energy is equal to 0.
(b) The gravitational potential energy is given by :
It can be calculated as :
(c) The mechanical energy is equal to the sum of kinetic and potential energy such that,
M = 0 J + 492.84 J
M = 492.84 J
Hence, this is the required solution.
Answer:
Velocity,v = 0.323 m/s
Explanation:
The acceleration of a particle is given by :
b = 0.8 m when x = 0
Since,
At x = 0, v = 1 m/s
At x = -1 m
v = 0.323 m/s
So, the velocity of the particle is 0.323 m/s. Hence, this is the required solution.