From Newton's second law of motion,
F = m*a
= m * (change in velocity)/time [As a = (change in velocity)/time]
From the question, we know
F = 400 N, time = 5 s
Therefore,
400 = 1000 * (change in velocity)/5
i.e. change in velocity = 2 m/s
Momentum = m * velocity
Therefore,
Change in momentum = (change in mass) * (change in velocity)
= 1 * (change in velocity) [As m remains the same]
= 1 * 2
= 2 kgm/s
Answer:
Sonia will experience repulsion in two balloons
Explanation:
Here when we rub the balloon with the woolen cloth then due to friction between the cloth and balloon electrons from balloon will transfer to woolen cloth.
Due to transfer of electron the balloon will get positive charge which is given by
so here since both balloons are rubbed against woolen cloth so both balloon will get some positive charge
now we know by the property of charge that two similar charges will always repel each other so here two balloons will repel each other after they rubbed against woolen cloth.
Given: Acceleration a = 2 m/s²; Initial Velocity Vi = 0
Final Velocity Vf = 10 m/s
Required: Time t = ?
Formula: a = Vf - Vi/t
t = Vf - Vi/a
t = 10 m/s - 0 m/s/2 m/s²
t = 5 s
Well A goes clock wise, B goes counter clock wise, and C goes clock wise.
Hope this helps!