2. 1D Motion / Kinematics

Vertical Motion and Free Fall

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A steel ball is dropped onto a thick piece of foam. The ball is released 2.5 meters above the foam. The foam compresses $3.0 cm$ as the ball comes to rest. What is the magnitude of the ball's acceleration as it comes to rest on the foam? Ignore air resistance.
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When a feather and a coin are dropped in a vacuum, they fall with equal $what$ ?
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If you dropped a rock from rest and it fell $4.9$ meters in $1$ second, what is the approximate value of the acceleration due to gravity $g$ assumed in this calculation?
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For a ball that is dropped from rest and falls freely under gravity, which of the following correctly describes its velocity $v$ as a function of time $t$ (neglecting air resistance)?
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A pellet gun is fired straight downward from the top of a $50 m$ tall building with an initial speed of $10 m / s$ . Ignoring air resistance, how long does it take for the pellet to reach the ground? (Take $g = 9.8 m / s^{2}$ )
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A ball is thrown from the edge of a cliff in three different ways: (A) straight upward with an initial speed $v > 0$ , (B) straight downward with the same initial speed $v$ , and (C) horizontally with speed $v$ . Neglecting air resistance, rank the throws from longest to shortest time for the ball to hit the ground.
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During the vertical motion of a projectile, is the vertical component of velocity ( $v_y$ ) ever zero? If so, when does this occur?
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An object is thrown vertically upward and reaches its highest point. Ignoring air resistance, what is its velocity $1$ second after it reaches its highest point?
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Abby throws a ball straight upward with an initial velocity of $v_{0 y}$ . Ignoring air resistance, how high above her original starting position does the ball rise before coming to rest momentarily at its peak?
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A $60 k g$ rider is in an elevator that is in free fall. What is the rider's apparent weight during the period of free fall?
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A small bag of sand is released from a hot air balloon that is ascending vertically at a constant velocity. Ignoring air resistance, what is the initial velocity of the sand bag immediately after it is released, relative to the ground?
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When a bullet is fired horizontally from a rifle, at what point does it begin to fall toward the ground due to gravity?
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Two identical balls are dropped from the same height at the same time, one from rest and the other thrown downward with an initial speed $v_0$ . Ignoring air resistance, which ball hits the ground first, or do they hit at the same time?
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Which statement best compares the accelerations of two objects in free fall near Earth's surface (neglecting air resistance)?
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In vertical motion under gravity, how does the vertical acceleration at point $A$ compare to the vertical acceleration at point $C$ along the trajectory of a freely falling object (neglecting air resistance)?
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