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IRINA_888 [86]
3 years ago
10

Why is the unit of momentum called derived unit​

Physics
1 answer:
Mnenie [13.5K]3 years ago
8 0

Answer:

the SI unit of momentum is :- kg.ms-1

and we know that,

kinetic energy = 1/2 mv2

E=p2/2m

p=(2Em)1/2

so the derived units are (J.kg)1/2

Explanation:

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4 0
3 years ago
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The electric field strength E is measured as:
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The correct answer is
<span>force per unit charge.

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3 years ago
The purpose of striking the ball in a volleyball game is to: 1. Place the ball in motion 2. Change the direction of the ball's m
zhenek [66]

Answer:

4. All of the above

Explanation:

The purpose of striking the ball in a volleyball game:

From the serve you could state that you need to place the ball in motion.

When returning a shot of, you normally want to change the direction of the ball's motion.

During a dropshot, you purposely want to slow down the ball's motion.

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8 0
3 years ago
Use Hooke's Law to determine the work done by the variable force in the spring problem. Nine joules of work is required to stret
natima [27]

Answer:

29.16 J

Explanation:

From Hook's law,

W = 1/2(ke²)..................... Equation 1

Where W = work done, k = Spring constant, e = extension.

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Substitute into equation 1

9 = 1/2(k×0.5²)

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The work done required to stretch the spring by additional 0.4 m is

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6 0
3 years ago
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slavikrds [6]

Answer:

Force, F = 77 N

Explanation:

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We need to calculate the force is needed to accelerate a sled. It can be calculated using the formula as :

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3 0
3 years ago
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