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1. |
What is the value of force, measured by a force sensor placed on the wall; if a rigid block of mass 3kg is smashed against the wall with an acceleration of 5m/s2? (Take acceleration due to gravity=10m/s2) |
A. | 15 Newton |
B. | 20 Newton |
C. | 16 Newton |
D. | 0 Newton |
Answer» B. 20 Newton | |