7 Momentum Exam

Front

What is the purpose of crumble zones on a car?

Back

To increase the time of impact, reducing the force experienced by occupants.

Front

True or False: A big truck will always have more momentum than a small car.

Back

False. Momentum depends on both mass and velocity.

Front

When an egg is thrown at a wall and at a bed sheet, where will the force of impact be greater?

Back

The force of impact will be greater against the wall.

Front

Why is it beneficial for bungee jumpers to use elastic cords instead of stiff cords?

Back

Because elastic cords increase the time of impact, reducing the force experienced.

Front

What type of quantity is momentum?

Back

Momentum is a vector quantity.

Front

Define momentum in physics.

Back

Momentum is the product of an object's mass and its velocity.

Front

What is the formula for calculating momentum?

Back

Momentum (p) = mass (m) × velocity (v).

Front

Explain the concept of impulse.

Back

Impulse is the change in momentum resulting from a force applied over a period of time.

Front

What is the relationship between impulse and momentum?

Back

Impulse equals the change in momentum: Impulse = Δp = F × Δt.

Front

How does increasing the time of impact affect the force experienced during a collision?

Back

Increasing the time of impact decreases the force experienced, according to the impulse-momentum theorem.