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You are a Starfleet captain going boldly where no man has gone before. You land

ID: 1586450 • Letter: Y

Question

You are a Starfleet captain going boldly where no man has gone before. You land on a distant planet and visit an engineering testing lab. In one experiment a short, light rope is attached to the top of a block and a constant upward force F is applied to the free end of the rope. The block has mass m and is initially at rest. As F is varied, the time for the block to move upward 8.00 m is measured. The values that you collected are given in the table below.


Select the correct graph of  versus the acceleration  of the block.Select the correct graph of F versus the acceleration a of the block.

F (N) Time (s) 250 3.3 300 2.2 350 1.7 400 1.5 450 1.3 500 1.2

Explanation / Answer

we know that s = 0.5xaxt^2

substitute s = 8 and t given from the table to find accelerations for different forces

fourth graph   ( answer )

for F = 250 N

acceleration is 1.47

for F = 400

acceleration is 7.11

for F = 500

acceleration is 11.1