Question

2. The product of an object’s mass and velocity is its

Answer 1

2. The product of an object’s mass and velocity is its
The correct answer is momentum.


3. What is conserved when two objects collide in a closed system? 

The correct answer is momentum.


4. What is the momentum of a 50-kilogram ice skater gliding across the ice at a speed of 5 m/s? 

The correct answer is 250 kg • m/s

Answer 2

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