Answer:
F = 0 N
Explanation:
Force on a moving charge in constant magnetic field is given by the formula

so here it depends on the speed of charge, magnetic field and the angle between velocity of charge and the magnetic field
here when charge is moving with speed 100 m/s in a given magnetic field then the force on the charge is given as

now when charge is moving parallel to the magnetic field with different speed then in that case

so here we have
F = 0
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Fish swimming forward in the water, the water gets pushed backward because the fish moving forward is forcing the water to move backward, the motion forward and backward are the same, they are opposite and equal.
Answer:
17.6 m/s²
Explanation:
Given:
= 90 m/s (final velocity)
= 2 m/s (initial velocity)
Δt = 5s (change in time)
The formula for acceleration is:
= Δv / Δt
We can find Δv by doing
Δv =
- 
Replace the values
Δv = 90m/s - 2m/s
Δv= 88m/s
Using the equation from earlier, we can find the acceleration by dividing the average velocity by time.
= Δv / Δt
= 
acceleration = 17.6 