A train moves uniform velocity of 36km/h for 15 sec.find distance
1 answer:
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Answer:
0.9 N
Explanation:
The force exerted on an object is related to its change in momentum by:
where
F is the force exerted
is the change in momentum
is the time interval
The change in momentum can be rewritten as
where
m is the mass
u is the initial velocity
v is the final velocity
So the formula can be rewritten as
In this problem we have:
is the mass rate
is the initial velocity
is the final velocity
Therefore, the force exerted by the hail on the roof is:
Answer:
Part a)
Velocity = 6.9 m/s
Part b)
Position = (3.6 m, 5.175 m)
Explanation:
Initial position of the particle is ORIGIN
also it initial speed is along +X direction given as
now the acceleration is given as
when particle reaches to its maximum x coordinate then its velocity in x direction will become zero
so we will have
Part a)
the velocity of the particle at this moment in Y direction is given as
Part b)
X coordinate of the particle at this time
Y coordinate of the particle at this time
so position is given as (3.6 m, 5.175 m)