Calculating Potential Energy

Practice Questions

High School Physics › Calculating Potential Energy

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A book falls off the top of a bookshelf. What is its potential energy right before it falls?

$\small g=-9.8\frac{m}{s^2}$

A pendulum with string length is dropped from rest. If the mass at the end of the pendulum is , what is its initial potential energy?

$\small g=-9.8\frac{m}{s^2}$

Two balls, one with mass and one with mass , are dropped from above the ground. What is the potential energy of the ball right before it starts to fall?

$\small g=-9.8\frac{m}{s^2}$

Two balls, one with mass and one with mass , are dropped from above the ground. What is the potential energy of the ball right before it starts to fall?

$\small g=-9.8\frac{m}{s^2}$

A man stands at the top of a tall building. He holds a rock over the edge. What is the potential gravitational energy of the rock?

Laurence throws a rock off the edge of a tall building at an angle of $20^{\circ}$ from the horizontal with an initial speed of $31\frac{m}{s}$ .

$g=-9.8\frac{m}{s^2}$ .

What is the potential energy of the rock at the moment it is released?

A skier is at the top of a hill. At the bottom of the hill, she has a velocity of $\small 12\frac{m}{s}$ . How tall was the hill?

An astronaut is on a new planet. She discovers that if she drops a space rock from above the ground, it has a final velocity of $3\frac{m}{s}$ just before it strikes the planet surface. What is the acceleration due to gravity on the planet?