2. 1D Motion / Kinematics

A stone is dropped from the top of a cliff. It is seen to hit the ground below after 3.25 s. How high is the cliff?

You throw a glob of putty straight up toward the ceiling, which is $3.60$ m above the point where the putty leaves your hand. The initial speed of the putty as it leaves your hand is $9.50$ m/s. What is the speed of the putty just before it strikes the ceiling?

You throw a glob of putty straight up toward the ceiling, which is $3.60$ m above the point where the putty leaves your hand. The initial speed of the putty as it leaves your hand is $9.50$ m/s. How much time from when it leaves your hand does it take the putty to reach the ceiling?

In the absence of air resistance, how many forces act on an object in free fall near the surface of the $Earth$?

An egg is thrown nearly vertically upward from a point near the cornice of a tall building. The egg just misses the cornice on the way down and passes a point $30.0$ m below its starting point $5.00$ s after it leaves the thrower's hand. Ignore air resistance. What is the initial speed of the egg?

A rock is dropped from rest from a height of $2.5$ meters. What is its velocity just before it reaches the ground? (Assume $g=9.8m/s^2$ and ignore air resistance.)

Two balls of different masses are dropped from the same height in the absence of air resistance. Which ball has a greater acceleration as it drops toward the ground?

In which of the following scenarios is a baseball in free fall?

In the absence of air resistance, which of the following statements about an object in free fall near Earth's surface is correct?

If you throw a ball straight up into the air and ignore air resistance, what is the velocity of the ball at its highest point ($v$)?

A rocket is launched straight up with constant acceleration. Four seconds after liftoff, a bolt falls off the side of the rocket. The bolt hits the ground 6.0 s later. What was the rocket's acceleration?

An object is dropped from rest from a height of $25$ meters. Assuming no air resistance, what is its velocity just before it hits the ground? (Take $g=9.8m/s^2$)

An object is projected vertically upward with initial speed $u$. What is its speed $v$ when it reaches a height equal to half of its maximum height $\frac{1}{2}{h}_{\max }$?

Bill can throw a ball vertically at a speed 1.5 times faster than Joe can. How many times higher will Bill's ball go than Joe's?