Unit 4: Momentum

​Unit 4: momentum

By Aris Ventura-Peralta

Multiple Choice

What is Inertia?

• Inertia is the energy stored in a moving object.
• Inertia is the force that causes an object to move.
• Inertia is the speed of an object in motion.
• Inertia: How hard it is to accelerate something

Multiple Choice

What is momentum?

• Momentum: How hard it is to stop something.

• Momentum is the energy stored in an object.
• Momentum is the distance traveled by an object.
• Momentum is the force applied to an object.

Newton 1st law

Unless an object experiences a net force, its speed, direction, velocity, and momentum do not change. 

Multiple Choice

Momentum Is a scalar

• True
• False

Newton’s second law for momentum

Multiple Choice

What is Impulse momentum theorem?

• Momentum is defined as the force applied over a time interval.
• The impulse-momentum theorem states that energy is conserved in collisions.
• Impulse is the product of mass and velocity of an object.
• The impulse-momentum theorem relates impulse to the change in momentum of an object.

Multiple Choice

is ΔP=FnetΔT the same as F=ma

• No, they are completely different equations.
• Yes, they are related but not the same.

Multiple Choice

Force and change in time are inverse

• True
• False

Multiple Choice

Changes that take less time experience less force. 

• false

• true

Multiple Choice

If time goes up, the force goes ____.

• up
• sideways
• down

Net momentum, conservation of momentum

Multiple Choice

When you have multiple objects involved, you label each of them object 1 or 2.

• true

• false

Multiple Choice

What is newton's third law for momentum?

• F1=-F2

• For every force, there is a corresponding force that does not affect momentum.
• Momentum is always conserved in all interactions regardless of forces.
• Action and reaction forces do not influence the total momentum of a system.

Multiple Choice

what is the  the law of conservation of momentum.

• Whenever one object gains momentum, another object has to lose it. The net momentum of everything involved is the same. 

• Momentum is only conserved in elastic collisions.
• The momentum of an open system changes constantly.
• Momentum can be created or destroyed.

Multiple Choice

The net momentum of a system stays the same unless a force outside the system acts on it. 

• True
• False