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Vlad [161]
2 years ago
15

A person jogs 4.o km in 32 minutes then 2.0 km in 22 minutes and finally 1.0 km in 16 minutes. What is the joggers average speed

in km per minute
Physics
1 answer:
AlladinOne [14]2 years ago
6 0
Average speed = distance travelled / time used
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projectile motion of a particle of mass M with charge Q is projected with an initial speed V in a driection opposite to a unifor
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Answer:

Range, R = MV²/2QE

Explanation:

The question deals with the projectile motion of a particle mass M with charge Q, having an initial speed V in a direction opposite to that of a uniform electric field.

Since we are dealing with projectile motion in an electric field, the unknown variable here, would be the range, R of the projectile. We note that the electric field opposes the motion of the particle thereby reducing its kinetic energy. The particle stops when it loses  all its kinetic energy due to the work done on it in opposing its motion by the electric field. From work-kinetic energy principles, work done on charge by electric field = loss in kinetic energy of mass.

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A 20-kg child running at 1.4 m/s jumps onto a playground merry-go-round that has mass 180 kg and radius 1.6m. She is moving tang
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ωf = 0.15909090...

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The momentum of the rolling ball will have less momentum than before the collision and the stationary ball will have more momentum after the collusion.
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