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GrogVix [38]
3 years ago
15

Why the unit of power is called derived unit? ​

Physics
1 answer:
Lilit [14]3 years ago
7 0
A :-) it was given the name Newton (N). from this, the derived unit of energy (or work) is defined ,as the work produced when the unit of force causes a displacement equal to the unit of length of its point of application along its direction . It was given the name Joule (J).
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When two objects interact, the change in momentum of the first object is ______ the change in momentum of the second object.
Mariulka [41]

Answer:

A. Equal to and Opposite

Explanation:

           when there is no External force acting on the system of bodies then Net momentum of the system is Conserved .

        Given that there are 2 bodies

         Let  P₁ as first object's momentum

                  P₂ as second object's momentum.

                  Total Momentum =P₁ + P₂

           As there is no external force acying on the system

                 Change in the Total momentum is zero

so,

                  0 = Δ P₁ + ΔP₂

                   ΔP₂ = -ΔP₁

                   negative sign indicates opposite direction.

                       Both are of equal magnitude.

6 0
4 years ago
If a 0.5kg cart is loaded with three 1.5-kg bricks, then the total mass of the loaded cart would be 5.0 kg. If it is moving with
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Momentum = mass x acceleration

5 x 2 = 10 kg. m/s
4 0
3 years ago
How is Newton’s 3rd law in baseball?
BaLLatris [955]

Answer:Explanation: According to Newton's third law, the force exerted by the bat hitting the ball will be equal in magnitude but opposite in direction of the force the ball exerts on the bat. Generally, your arms are stiff when you hit the ball forward, so you will not feel the bat "recoiling".

Explanation:

3 0
3 years ago
Why does a person while firing a bullet holds the gun tightly to his shoulder? SHORT ANSWER ​
Amanda [17]

Answer:

They hold it tightly to their shoulder because the gun recoils and jumps back so by holding it to their shoulder it allows them to stablize the gun so that when it jumps in stead of the gun kicking back and flying the gun jumps and hit the shoulder.

Explanation:

6 0
3 years ago
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A source of emf is connected by wires to a resistor, and electrons flow in the circuit. The wire diameter is the same throughout
Zina [86]

Answer:

C. the same.

Explanation:

The drift speed of electrons in a circuit is the same all through the circuit.

4 0
3 years ago
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