Answer: 54.55 m/s
Explanation:
Distance = 300 m
Time = 5.5 s
Average Speed = Total Distance/Total Time
= 300/5.5
= <u>54.55 m/s</u>
Hope this helped..
Work Done = Force x distance
Since she exerted a horizontal force of 20N over a distance of 5m, the work done is 20N x 5m which is equals to 100 joules
Alice and Jim will put 2,400 Joules of energy into the situation,
and 1,800 Joules of energy will come out in a useful form.
The efficiency of the whole process will be
1800 J / 2400 J = 3/4 or 75% .
The solution to your problem is as follows:
a=dv/dt=2*0.82*twhat time velocity is 13.7 solve 13.7=0.82*t^2 t=sqrt(13.7/0.82) =4.51 sUse the time in the acceleration expression a= 2*0.82*4.51=7.39m/s^2
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Answer:
71.42857 kgm²
1311.81946 kg
5.082 rad/s
Explanation:
F = Force = 200 N
R = Radius = 0.33 m
= Angular acceleration is 0.924 rad/s²
Moment of inertia is given by
The moment of inertia of the wheel is 71.42857 kgm²
Moment of inertia of a solid cylindrical wheel is given by
The mass of the wheel is 1311.81946 kg
Rotational impulse is given by
Also
The angular speed is 5.082 rad/s