What is the direction of the force for a negative charge moving downward in a magnetic field pointing to the left?

A charge is moving downwards so let say this downwards direction is along -z direction

Also here magnetic field is given towards left so let say left direction is towards -x direction

now we have to find force direction so as we know that force on a moving charge is given by

so here we have

so force is along +Y direction

i'm only doing this for the points : (

explanation:

i'm only doing this the points

total distance travelled = 60 miles

total time taken =1.5 hours

average speed = total distance / total time

60 / 1.5

= 40

therefore, average speed = 40 m/h

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