Answer:
The force of gravity pulling downward and the force of the table pushing upwards on the book are of equal magnitude and opposite directions. These two forces balance each other. Yet there is no force present to balance the force of friction. ... Unbalanced forces cause accelerations.
Explanation:
Answer: Frequency of 1 ÷ 2 = 0.5 Hz.
Answer:
a = 10 m/s²
Explanation:
<u><em>Given:</em></u>
Force = F = 50 N
Mass = m = 5 kg
<u><em>Required:</em></u>
Acceleration = a = ?
<u><em>Formula:</em></u>
F = ma
<u><em>Solution:</em></u>
<em>Rearranging the formula for a</em>
=> a = F/m
=> a = 50/5
=> a = 10 m/s²
<span>To get that, find the time when slope equals to 0, use the derivate theory from calculus.
s = 8 cos t + 9 sin t, t ≥ 0
s' = -8 sin t + 9 cos t (this is slope)
0 = -8 sin t + 9 cos t
8 sin t = 9 cos t
tan t = 9/8
t = 48.37 seconds</span>
