# CHILD DEVELOPMENT PEDAGOGY

## GROWTH DEVELOPMENT CHILD

### SUMMATIVE ASSESSMENT

 Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A runner has a momentum of 670 kg m/s and is travelling at a velocity of 9 m/s. What is his mass?
 A 6030 kg B 0.0134 kg C 74.4 kg D 80 kg
Explanation:

Detailed explanation-1: -The value of mass will be 74.44 kg.

Detailed explanation-2: -A. What is the momentum if the mass is 1.5 kg and the velocity is 4 m/s? 6 kg•m/s Turn on Show numerical data and use the Gizmo to check your answer.

Detailed explanation-3: -AI Recommended Answer: The momentum of a man mass 75kg when he walks with a uniform velocity of 2m/s is:-75kg x 2m/s = 150 kgm/s The momentum of the man is now 150 kgm/s.

Detailed explanation-4: -Detailed Solution. The correct answer is 1000 kg ms–1.

Detailed explanation-5: -We can find the momentum of the car by multiplying the mass times the velocity. Because both the mass and velocity are given in SI units, we do not need to perform any unit conversion before multiplying. Hence, we have shown that the momentum of the car is 30000 kg m/s.

There is 1 question to complete.