In outer space, far from other objects, block 1 of mass 50 kg is at position m,

Question

In outer space, far from other objects, block 1 of mass 50 kg is at position m, and block 2 of mass 1200 kg is at position m. What is the (vector) gravitational force acting on block 2 due to block 1? It helps to make a sketch of the situation. At 4.5 seconds after noon both blocks were at rest at the positions given above. At 4.8 seconds after noon, what is the (vector) momentum of block 2? p2 = kg . m/s At 4.8 seconds after noon, what is the (vector) momentum of block 1? p i = kg . m/s At 4.8 seconds after noon, which one of the following statements is true? Block 1 is moving faster than block 2. Block 1 and block 2 have the same speed. Block 2 is moving faster than block 1.

Explanation / Answer

a) magnitude of force = 6.6*10^-11 * 50*1200/(10*10) = 3.96*10^-8 vector form of force on block 2 by block 1 = (-3.96 *10^-8 ,0,0) b) vector moment of 2 = 1200 * (3.3*10^-11) *4.5 = ( 1.789*10^-7 ,0,0) c) block 1 moves faster than block 2

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