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1 answer:
m=1800 kg has the greatest momentum
<u>Explanation:</u>
Linear momentum is defined as the product of mass and velocity of a body. It is directly proportional to mass and velocity and is given by the expression
P=mv
where P denotes linear momentum,m denotes mass and v denotes velocity.
given that
velocity of both objects is v=5 m/s
Mass of the first object m=
Mass of the second object m=1800 kg
velocity of both objects is same. The second object has higher mass than first.
When mass increases, momentum increases with it.
Thus the second object with m=1800 kg has higher momentum than first.
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Answer:
Explanation:
Given:
height above which the rock is thrown up,
initial velocity of projection,
let the gravity on the other planet be g'
The time taken by the rock to reach the top height on the exoplanet:
where:
final velocity at the top height = 0
(-ve sign to indicate that acceleration acts opposite to the velocity)
The time taken by the rock to reach the top height on the earth:
Height reached by the rock above the point of throwing on the exoplanet:
where:
final velocity at the top height = 0
Height reached by the rock above the point of throwing on the earth:
The time taken by the rock to fall from the highest point to the ground on the exoplanet:
(during falling it falls below the cliff)
here:
initial velocity= 0
Similarly on earth:
Now the required time difference: