CHILD DEVELOPMENT PEDAGOGY

Detailed explanation-1: -Reasoning: Momentum = mass x velocity. Thus if two objects have the same momentum, the lighter object will have a larger velocity.

Detailed explanation-2: -A massive and fast moving bowling ball must have a large momentum while a light and slow moving tennis ball must have a small momentum. However, a fast tennis ball may have the same momentum as a slow rolling bowling ball due to its high velocity (Fig. 1-3).

Detailed explanation-3: -The bowling ball because it has more mass (it weighs more)! So we say the bowling ball has more momentum even though it moves at the same speed as the tennis ball because the bowling ball is bigger.

Detailed explanation-4: -Also when the mass of the object is more, it has more inertia and therefore greater tendency to resist changes in the state of motion. This causes the object to travel shorter distance . Here, tennis ball will have less inertia due to lesser mass as compared to the bowling ball and hence moves farther away.

Detailed explanation-5: -The easy explanation is that the tennis ball is hollow. Since the initial heights h are equal, they both have the same velocity as each other (though not constant in time) no matter how far they fall and, thus, hit at the same time.