How fast is the cannonball going when hitting the balloon
A cannonball shot with an initial velocity of 143 m/s at an angle of 56° follows a parabolic path and hits a balloon at the top of its trajectory. Neglecting air resistance, how fast is the cannonball going when it hits the balloon?
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A soccer player 'heads' a size 5 ball deflecting it by 46.0°, and keeps its speed of 15.90 m/s constant. A size 5 ball has a mass of approximately 0.421 kg. What is the magnitude of the impulse which the player must impart to the ball?
When the power switch is turned off, you observe that the wheel stops in 45.0 s with constant angular acceleration due to friction at the axle. What torque does friction exert while this wheel is slowing down.
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In Daniel Tanner's 4th Ed. Curriculum Development Theroy into Practice, Chapter 2, question 1: Why was Dewey's laboratory school at turning point in curriculum thought and educational improvement?
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