The time to travel to the mirror and back was
<span>t=450/3E+8 </span>
<span>The distance from one slot to another is </span>
<span>2*pi*0.05/550 </span>
<span>the time to rotate the distance was </span>
<span>t=2*pi/(w*550) </span>
<span>combine </span>
<span>2*pi/(w*550)=450/3E+8 </span>
Acceleration
- a=v-u/t
- a=20-0)6.6
- a=20/6.6
- a=3.03m/s²
Now
Apply Newtons second law
To find frictional force we need coefficient of friction which is not given .
generally for car case the value of coefficient is 0.6-0.8 .
Putting max 0.8
- f=$\mu$ N
- f=0.8(3030)
- f=2424N
Note:
Last part is assumption not accurate
Work occurs when an applied force results in movement of an object in the same direction as the applied force.
Work is done when a force that is applied to an object moves that object. The work is calculated by multiplying the force by the amount of movement of an object (W = F * d). A force of 10 newtons, that moves an object 3 meters, does 30 n-m of work.
Answer:
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Explanation:
Answer:
and direction
Explanation:
because when we definite force force is the pull or push of an object and when a force is exerted on the object it works 3 tasks 1, it multiply the force , 2, it multiply the speed, 3, it changes the directions so when we see a vector quantity is a quantity that have both magnitude and direction so when it multiply it's force and speed the object will have magnitude and when it multiply it's direction the object will have a direction. thank you for reading this explanation.☺☺☺☺
