Question

A sled is at rest at the top of a slope 2 m high. The sled has a mass of 45 kg. What is the sleds potential energy

Answer 1

Answer:

$\boxed {\boxed {\sf882 \ Joules}}$

Explanation:

Potential energy can be found by multiplying the mass by the height by the gravitational acceleration.

$PE=mgh$

The mass is 45 kilograms. The height is 2 meters. The gravitational acceleration on Earth is 9.8 meters per seconds squared.

$m=45 \ kg \\h= 2 \ m \\g=9.8 \ m/s^2$

Substitute the values into the formula.

$PE=45 \ kg * 2 \ m * 9.8 m/s^2$

Multiply.

$PE=441 kg*m/s^2*2 \ m$

$PE= 882 \ kg *m/s^2 *m$

1 kg*m/s^² is equal to 1 Newton (N). Substitute N in for kg*m/s²

$PE=882 \ N*m$

1 Newton meter (N*m) is equal to 1 Joule (J). Our current answer is equivalent to 882 Joules.

$PE= 882 \ J$

The sled's potential energy is 882 Joules.

Answer 2

Answer:

882 J

Explanation: