(New) AP Physics 1 - Unit 4 Review - Linear Momentum - Exam Prep

The video tutorial reviews Unit 4 on linear momentum for AP Physics 1, covering key concepts such as the equation for linear momentum, its vector nature, and its applications in modeling collisions and explosions. It explains Newton's second law in terms of momentum and introduces impulse, highlighting its significance in collision scenarios. The tutorial also differentiates between elastic and inelastic collisions, emphasizing the conservation of momentum and changes in kinetic energy.

What is the equation for linear momentum?

• Momentum = mass x velocity

• Momentum = mass + velocity

• Momentum = velocity / mass

• Momentum = mass / velocity

Which of the following is the correct symbol for linear momentum?

• Uppercase P

• Lowercase p

• Uppercase M

• Greek letter rho

What does impulse equal to in terms of momentum?

• Impulse = change in velocity

• Impulse = change in momentum

• Impulse = mass x acceleration

• Impulse = force x distance

How can impulse be represented graphically?

• As the peak of a force vs. time graph

• As the intercept of a force vs. time graph

• As the area under a force vs. time graph

• As the slope of a force vs. time graph

Why is wearing a helmet important during a collision?

• It increases the change in time and decreases the force of impact

• It decreases the change in time during collision

• It increases the force of impact

• It has no effect on impulse

What happens to the momentum of a system during a collision if the net external force is zero?

• Momentum becomes zero

• Momentum remains constant

• Momentum decreases

• Momentum increases

In an elastic collision, what happens to the total kinetic energy of the system?

• It becomes zero

• It remains the same

• It decreases

• It increases

What is a characteristic of a perfectly inelastic collision?

• Objects bounce off each other

• Objects stick together

• Kinetic energy is conserved

• Momentum is not conserved

Which type of collision involves a decrease in total kinetic energy?

• Inelastic collision

• Elastic collision

• Perfectly elastic collision

• Superelastic collision

What remains constant in both elastic and inelastic collisions?

• Momentum

• Mass

• Velocity

• Kinetic energy