Question

1. What force is responsible for your socks sticking together after they have been in a clothes dryer?
Gravitational
Electric
Friction
Sliding
2.An object changes direction as it moves. Which of the following is FALSE?
The acting net force is not zero
An unbalanced force acts on the object
The object is accelerating
A centripetal force acts on the object
3.Which of the following is not considered a renewable energy resource
Geothermal energy
Biomass
Hydroelectric energy
Uranium
4.Which statement correctly describes the direction of spontaneous heat flow

Answer 1

1. Friction (Fabrics rub together, creating static electricity)
2. Not 100% sure... either B or D.
3. Uranium (Geothermal is obviously renewable, same with Hydroelectric, and biomass is wood, garbage, etc. so that's renewable as well.)
4. No answer choices so I can't help you with this one.

good luck :)

Answer 2

when an object changes it direction it means there is is a change in velocity so
where there is a change in velocity there exists accleration
because
accleration : rate of change of velocity
a = v/t
so in b it will be C