Answer:
a = 3 [m/s²]
Explanation:
To solve this problem we must use the following equation of kinematics.
where:
Vf = final velocity = 60 [m/s]
Vo = initial velocity = 20 [m/s]
a = acceleration [m/s²]
t = time = 10 [s]
Now replacing these values we have:
60 = 20 + (a*10)
60 - 20 = 10*a
30 = 10*a
a = 3 [m/s²]
Answer:
b. Thermal energy will flow from your hand to the snowball.
Explanation:
Explanation:
a) The Earth makes 1 rotation in 24 hours. In seconds:
24 hr × (3600 s / hr) = 86400 s
b) 1 rotation is 2π radians. So the angular velocity is:
2π rad / 86400 s = 7.27×10⁻⁵ rad/s
c) The earth's linear velocity is the angular velocity times the radius:
40075 km × 7.27×10⁻⁵ rad/s = 2.91 km/s
