<h3>2.<u> Answer;</u></h3>
Momentum
<h3><u>Explanation;</u></h3>
- <em><u>Momentum refers to mass in motion, which means that objects that have mass and are in motion, will posses momentum, that is, they have their mass in motion. </u></em>
- <em><u>Momentum is given as the product of velocity of an object and its mass. Therefore, the amount of momentum possessed by a moving object or body is the product of mass and velocity. That is; p = m × v</u></em>
- From the equation, momentum is directly proportional to both mass and velocity.
<h3>3. <u>Answer;</u></h3>
Momentum
<h3><u>Explanation;</u></h3>
- <em><u>During collision, a force acts upon a body for a given amount of time change the velocity of an object. Product of force and time is called impulse</u></em>. The product of mass and velocity change is the change in momentum.
- <em><u>During collision the momentum change experienced by one object is equal in magnitude and opposite in direction to the momentum change experienced by the other object in collision.</u></em>
- That is; M1V1 =M2V2
<h3>4. <u>Answer; </u></h3>
= 250 kgm/s
<h3><u>Solution and explanation;</u></h3>
- <em><u>Momentum is given as the product of velocity of an object and its mass. </u></em>Therefore, the amount of momentum possessed by a moving object or body is the product of mass and velocity.
- That is; p = m × v
- mass = 50 kg, velocity = 5 m/s ; thus momentum will be;
- p = 50 × 5 = 250 kgm/s
Therefore, <em><u>momentum of the ice skater will be; 250 kgm/s</u></em>
Answer:
The more efficient the machine, the less energy wasted. For example, if a heat engine is able to turn 75 percent of the fuel it receives into motion, while 25 percent is lost as heat in the process, it would be 75 percent efficient
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Two identical balls collide<span> head on. The </span>initial velocity<span> of </span>one<span> is 0.75 </span>m/s<span> east, while that of the </span>other one<span> is 0.43 </span>m/s west<span>.</span>