Something that goes round in circles could have a high speed but zero average velocity.
Answer:
Force F = 1535.86 N
the force necessary for his wife to hold onto their child during the collision is 1535.86 N
Explanation:
Given;
Mass of toddler m = 13 kg
Velocity v = 37 mi/h = 37 × 0.44704 m/s = 16.54 m/s
Impulse time t = 0.14 seconds
Using the impulse momentum equation,
Impulse = change in momentum
Ft = m(∆v)
Force F = m(∆v)/t
∆v = 16.54 m/s
F = 13×16.54/0.14
Force F = 1535.86 N
Answer:
24.7 ohms
Explanation:
Given in the question,
electric current = 3 A
potential difference = 74 V
Using ohm's law
<h3>V = IR</h3>
R = V/I
<em>here,</em>
<em>R = resistance of wire</em>
<em>V = potential difference</em>
<em>I = electric current</em>
<em />
plug value in the formula
R = 74/3
R = 24.7 ohms
Therefore, the resistance of the wire is, 24.7 ohms
