Find the magnitude of the cannon ball''s velocity
A cannon shoots a cannon ball. The cannon is inclined at 45 degrees from the horizontal. The initial velocity of the ball is 147 m/s. Find the magnitude of the cannon ball's velocity 3.9 seconds after it is fired.
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A 13 g bullet traveling 213 m/s penetrates a 2.0 kg block of wood and emerges going 152 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?
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Find the speed with which the pebble strikes the ground when the pebble is fired (a) horizontally, (b) vertically straight up, and (c) vertically straight down.
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