Askier with a potential energy of 137,200 j waits on top of a ski jump that is 200 m high. what is the mass of the skier? 20 kg 70 kg 137 kg 686 kg

70 kg

Explanation:

Potential energy can be found by a product of mass, height and the acceleration of gravity. Here we're given a potential energy of:

A height of:

Acceleration of gravity on Earth:

According to the potential energy equation, we can express it as:

We may rearrange this equation for mass now:

Substituting the given variables:

Therefore, the mass of the skier is 70 kg. Make sure to remember the right units: energy is measured in joules, mass is measured in kilograms, acceleration of gravity is measured in meters per second-squared, height is measured in meters.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.