Which organic compound forms much of the structure of cells?
2 answers:
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Answer:
<em>The velocity of the truck is 3.33 m/s</em>
Explanation:
<u>Law Of Conservation Of Linear Momentum </u>
The total momentum of a system of bodies is conserved unless an external force is applied to it. The formula for the momentum of a body with mass m and velocity v is
P=mv.
If we have a system of bodies, then the total momentum is the sum of the individual momentums:
If some collision occurs, the velocities change to v' and the final momentum is:
In a system of two masses:
There are two objects: The m1=4000 Kg car and the m2=6000 Kg truck. The car was moving initially at v1=4 m/s and the truck was at rest v2=0. After the collision, the car moves at v1'=-1 m/s. We need to find the velocity of the truck v2'. Solving for v2':
Substituting:
The velocity of the truck is 3.33 m/s
Answer:
option (b)
Explanation:
Mass of moon = m
Mass of earth = 81.25 x mass of moon = 81.25 m
Radius of moon = r
radius of earth = 3.668 x radius of moon = 3.668 r
Frequency on earth = 2 Hz
Let the frequency on moon is f.
The formula for the frequency is given by
The value of acceleration due to gravity on earth is g.
ge = G Me / Re^2
ge = G x 81.25 m / (3.668 r)^2
ge = 6.039 x G m / r^2 = 6.039 x gm
ge / gm = 6.039
Now use the formula for frequency
fm = 0.814 Hz