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jjg242
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8. A karate master strikes a board with an initial velocity of 10 m/s, decreasing to 1 m/s as his hand passes through the board. If the time of contact with the board is 0.002 s, and the mass of the coordinated hand and arm is 1 kg, what is the force exerted on the board.
a. 1000 N
b. 1800 N
c. 2700 N
d. 4500 N
- well, I lost my book because my backpack got stolen and I have an older physics book i got from a friend and the pages don't match up with my study guide. I can't find the right equation for this. I need an equation that uses change in velocity, contact time, and mass of the object to get F in Newtons. If anyone can show me how I do this or at least point me in the right direction I would appreciate it.
a. 1000 N
b. 1800 N
c. 2700 N
d. 4500 N
- well, I lost my book because my backpack got stolen and I have an older physics book i got from a friend and the pages don't match up with my study guide. I can't find the right equation for this. I need an equation that uses change in velocity, contact time, and mass of the object to get F in Newtons. If anyone can show me how I do this or at least point me in the right direction I would appreciate it.