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questions
questions
100

how do forces occur?

whenever there is an interaction between objects

100

what does potential energy depend on? kinetic energy? 

There are different types, but in basic physics we usually mean gravitational potential energy.

It depends on:

  1. Mass

  2. Height

  3. Gravity

Kinetic energy depends on:

  1. Mass (how heavy something is)

  2. Velocity (speed) — and this one matters a lot

200

what is negative acceleration?

is when an object slows down
200

what are the units for work, power, and energy? 

energy = j

power= w 

work= j

300

what is the accelartion of gravity on the earth? does it ever change?

9.8 m/s2 

yes
300

what is the relationship between work, kinetic, and potential energy?

  • Work is what changes energy.

  • Kinetic energy (KE) is energy of motion.

  • Potential energy (PE) is stored energy (like being high up).

400

what is effceincy and how would you calculate it? 

the acceleration due to gravity on earth is approximately 

9.81 m/s²

400

are compands neccary for output and input? what does nesting if/ then allow for? voltages for whisker pressed/not pressed

yes.

500

what do machines do?

make work easier by changing how force is applied