Answer:
500 m/s
Explanation:
Momentum, p is a product of mass and velocity. From law of conservation of momentum, the initial momentum equals final momentum
Here m and v represent mass and velocity respectively and subscripts 1 and 2 represent car and barrier respectively
Therefore, the velocity of barrier will be 500 m/s
The answer is A. Mass is constant, height and width won’t change. So that leaves weight.
Answer:
Explanation:
Cross multiply
cross multiply
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I = MR^2
The Attempt at a Solution:::
I total = (3M)(0)^2 + (2M)(L/2)^2 + (M)(L)^2
I total = 3ML^2/2
It says the answer is 3ML^2/4 though.
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No work id done by Fn. Even for a block sliding up or down an incline, the normal force does no work. The normal force by definition is petpendicular to the surface,; no component of the normal force is parallel to the motion. Consider a person standing in an elevator.
