A knife thrower throws a knife toward a 300 g target that is sliding in her...
A knife thrower throws a knife toward a 300 g target that is sliding in her direction at a speed of 2.20 m/s on a horizontal frictionless surface. She throws a 22.5 g knife at the target with a speed of 36.0 m/s. The target is stopped by the impact and the knife passes through the target. Determine the speed of the knife (in m/s) after passing through the target.
Homework Answers
Solution :-
Energy cannot be conserved,
so working with momentum...
+ direction away from her..
-300*2.20+22.5*36=300*0+22.5V
solve for V
V = 6.67 m/she
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