The force of gravity on a person or object on the surface of a planet is called A. gravity
ОВ.
B. free fall
OC
c. terminal velocity
D. weight

As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?