Predict/Calculate A cannon is placed at the bottom of a cliff 61.5 m high. If the cannon is fired straight upward, the cannonball just reaches the top of the cliff. (a) What is the initial speed of the cannonball? (b) Suppose a second cannon is placed at the top of the cliff. This cannon is fired horizontally, giving its cannonballs the same initial speed found in part (a). Show that the range of this cannon is the same as the maximum range of the cannon at the base of the cliff. (Assume the ground at the base of the cliff is level, though the result is valid even if the ground is not level.)
Predict/Calculate A cannon is placed at the bottom of a cliff 61.5 m high. If the cannon is fired straight upward, the cannonball just reaches the top of the cliff. (a) What is the initial speed of the cannonball? (b) Suppose a second cannon is placed at the top of the cliff. This cannon is fired horizontally, giving its cannonballs the same initial speed found in part (a). Show that the range of this cannon is the same as the maximum range of the cannon at the base of the cliff. (Assume the ground at the base of the cliff is level, though the result is valid even if the ground is not level.)
Predict/Calculate A cannon is placed at the bottom of a cliff 61.5 m high. If the cannon is fired straight upward, the cannonball just reaches the top of the cliff. (a) What is the initial speed of the cannonball? (b) Suppose a second cannon is placed at the top of the cliff. This cannon is fired horizontally, giving its cannonballs the same initial speed found in part (a). Show that the range of this cannon is the same as the maximum range of the cannon at the base of the cliff. (Assume the ground at the base of the cliff is level, though the result is valid even if the ground is not level.)
A plate slides off the edge of a kitchen table with an initial velocity of 3 m/s horizontally. The height of the tabletop above the
ground is 4.0 m. (neglect the air resistance)
a) what is the range of the projectile?
b) What is the velocity (including both the horizontal and vertical components) of the plate just before it hits the ground and
shatters into multiple pieces?
By what numerical factor will the range increase if you use a spring gun (fired horizontally) which give the ball four times as much initial velocity as in the lab? Explain your answer.
1) A golf ball (mass = 47 grams) rolls with speed of 0.30 m/s toward the edge of a table which is 0.60 m high.
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a) How many seconds is it in the air?
b) How far out from the point directly below the tables edge does the ball hit the floor?
The same golf ball is placed back on the table but this time is a sling shot shoots it at angle of 25 degrees
with the table (horizontal) with an intial velocity of 1.55 m/s.
c) Find the components of the initial velocity.
d) What is the maximum height above the table the golf ball will reach?
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