Displacement is d
Vf² = Vi² + 2 g d
(-20²) = (+10²) + 2 (-9.8) d
-19.6 d = 300
d = -15.3 m
negative means lower
time is t
d = Vi t + 1/2 g t²
-15.3 = 10 t + (-4.9) t²
4.9 t² - 10 t -15.3 = 0
t = 3.06 s
Hope this helps -John
Answer:
The forces could be gravity, friction between the car and the ground, the force Katie is applying and the normal reaction.
We will have that the factor that determines the direction of the heat flow between objects is the difference in temperature.
Evidence is <span>the facts or information that shows and supports a statement. WIth evidence, you can prove that what you say is true/valid.</span>