2. Answer;
Momentum
Explanation;
- 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.
- 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
- From the equation, momentum is directly proportional to both mass and velocity.
3. Answer;
Momentum
Explanation;
- 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. The product of mass and velocity change is the change in momentum.
- 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.
- That is; M1V1 =M2V2
4. Answer;
= 250 kgm/s
Solution and explanation;
- 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
- mass = 50 kg, velocity = 5 m/s ; thus momentum will be;
- p = 50 × 5 = 250 kgm/s
Therefore, momentum of the ice skater will be; 250 kgm/s
