You walk into a room and you see 4 chickens on a bed 2 cows on the floor and 2 cats in a chair. How many legs are on the ground?
1 answer:
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1) A) Object 1 has the greater momentum
The magnitude of the momentum of an object is given by:
where
m is the mass of the object
v is its speed
Object 1 has a mass of and a speed of
, so its momentum is
Object 2 has a mass of and a speed of
, so its momentum is
So we see that , so object 1 has the greater momentum.
2) The objects have the same kinetic energy.
The kinetic energy of an object is given by
where
m is the mass of the object
v is its speed
Object 1 has a mass of and a speed of
, so its kinetic energy is
Object 2 has a mass of and a speed of
, so its kinetic energy is
So we see that , so the objects have same kinetic energy