Answer:
the correct answers is D
Explanation:
Thermal energy can be transferred by three methods: conduction, convention, and radiation.
Radiation transfer occurs when there is no movement of matter for the exchange of energy.
In this case, checking the correct answers is D
since in this case the transfer is between light and sand without matter exchange
The answer is a) -9.8 m/s^2, then momentarily zero, then +9.8 m/s^2, that is because during this kind of movement we have a = g, a acceleration and g acceler. of gravity, from zero of the axis to upward a = -g (a and g are contrary by direction), the can stopes before it falls, it means a = o, and during the free fall a = g (same direction).
Net force I’m pretty sure
