<h2>
Answer</h2>
The weight will be 1/6 time less on the moon than earth.
<h2>
Explantion</h2>
The varies the size of the object the effects the of gravitational pull will vary. As the moon is smaller than the size of the earth, then it has less gravitational pull. The value of gravity is
on the earth but in the moon, it will reduce 1/6 times and will be
. The weight change by change the planet but mass remain same. In the given question the weight is 150g. So,
![W = m * g](https://tex.z-dn.net/?f=W%20%3D%20m%20%2A%20g)
at earth![g = 9.8ms^{-2}](https://tex.z-dn.net/?f=g%20%3D%209.8ms%5E%7B-2%7D)
by rearranging
![m= W/g](https://tex.z-dn.net/?f=m%3D%20W%2Fg)
![m = 150/9.8](https://tex.z-dn.net/?f=m%20%3D%20150%2F9.8)
![m = 15.3 g](https://tex.z-dn.net/?f=m%20%3D%2015.3%20g)
On moon ![g = 1.62 ms{^-2}](https://tex.z-dn.net/?f=g%20%3D%201.62%20ms%7B%5E-2%7D)
![m = 150/1.62](https://tex.z-dn.net/?f=m%20%3D%20150%2F1.62)
![m = 92.6 g](https://tex.z-dn.net/?f=m%20%3D%2092.6%20g)
The change in mass was because of gravitational pull
1. Stopping a car
2. Keeps us from slipping
3. Allows us to grip things and not drop them
1. For better aerodynamics and easier air flow while flying.
2. Because we generate friction that lights a match
4. Without friction we couldnt walk(we would slip around like on ice), cars wouldnt stick on road while driving.
3. Grooves in the tyres are designed to allow water to be expelled from beneath the tire and prevent hydroplaning.
16.7 m/s
<em>To</em><em> </em><em>deter</em><em>mine</em><em> </em><em>the </em><em>speed</em><em> </em><em>we</em><em> </em><em>use</em><em> </em><em>the</em><em> </em><em>formula</em><em>:</em><em> </em><em>Dista</em><em>nce</em><em> </em><em>÷</em><em> </em><em>Time</em><em> </em><em>so</em><em>,</em><em> </em><em>5</em><em>0</em><em> </em><em>÷</em><em> </em><em>3</em><em> </em><em>=</em><em> </em><em>1</em><em>6</em><em>.</em><em>6</em><em>6</em><em>.</em><em>.</em><em>.</em><em> </em><em>(</em><em> </em><em>rounde</em><em>d</em><em> </em><em>off</em><em> </em><em>to</em><em> </em><em>1</em><em>.</em><em>d</em><em>.</em><em>p</em><em> </em><em>is</em><em> </em><em>1</em><em>6</em><em>.</em><em>7</em><em>)</em><em>.</em>
Speed = distance/time
Time = 90/60 = 1.5 hours
Speed = 54/1.5
Speed = 36km/h