Resuelve:
1 answer:
The work done is 1764 J
Explanation:
The work done in lifting an object is equal to the gain in gravitational potential energy of the object:
where
m is the mass of the object
g is the acceleration of gravity
is the change in height of the object
For the object in this problem, we have
m = 100 kg
Therefore, the work done is
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Answer:
40 J
Explanation:
= 4 C
= 2 C
= 20 J
The potential energy is directly proportional to the charge of the particle
The potential energy expected is 40 J
Answer:
Explanation:
Given
Object fall from a height of
Considering initial velocity to be zero i.e.
using
where v=final velocity
u=initial velocity
a=acceleration
s=displacement
(b)Average acceleration
After falling 45 m, object strike the car and comes to rest after covering a distance of 0.5 m
again using
here final velocity will be zero i.e.
initial velocity
(c)time taken by it to stop