The average force is
Explanation:
We can solve this problem by applying the impulse theorem, which states that the impulse exerted on the bullet (product of force and time) is equal to the change in momentum of the bullet:
where
F is the average force exerted by the block on the bullet
is the duration of the collision
m is the mass of the bullet
v is its final velocity
u is its initial velocity
Here we have:
m = m
v = 0 (the bullet comes to rest)
And solving for F, we find the average force:
where the negative sign means the direction of the force is opposite to the direction of motion of the bullet.
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Answer:
The distance moved by the boat is 0.70 m.
Explanation:
Given that,
Mass of Romeo = 77.0 kg
Mass of Juliet = 55.0 kg
Distance = 2.70 m
Mass of boat = 80.0 kg
Let the distance moved by the boat is x.
as the center of mass will not change it's position
We need to calculate the distance moved by the boat
Using formula for distance
Put the value into the formula
Hence, The distance moved by the boat is 0.70 m.
An order-of-magnitude estimate of the volume of this balloon in cm3
IS 4 as it will be in few 10000cm^3 in volume 25*25*25
Answer:
I think that the centre of mass is the point at which the distribution of mass is equal in all directions, and does not depend on gravitational field. Centre of gravity is the point at which the distribution of weight is equal in all directions, and does depend on gravitational field
Answer:
Secondary current is 8A
Explanation:
Data :
Primary supply = Vp = 240 V
Secondary supply = Vs = 60V
Primary current = Ip = 2A
Secondary current = Is = ?
Formula : Vp × Ip = Vs × Is
So for secondary current formula becomes
Is = (Vp/Vs)×Ip = (240/60) × 2
Is = 4 × 2 = 8A