Preskoči na glavni sadržaj
Prijava
Sign up for FREE
arrow_back
Biblioteka

Formative Assessment on the Topic "Momentum & The Law of Conservation of Momentum"

star
star
star
star
star
Posljednje ažuriranje about 4 hours ago
7
Obavezno
3
Obavezno
5
Obavezno
1
Obavezno
2
Obavezno
5
Obavezno
0
Obavezno
4
  • Answer each question as you go:

    • For computation questions, show your complete solution (not just the final answer).

    • For the drawing question, tap/click directly on the image to draw your arrows.

    • For short answer questions, type your response in the box.

  • Your answers save automatically — you don't need to click "submit" at the end.

  • Take your time and answer honestly — this is a practice check, not a graded exam.

Pitanje 1
1.

In your own words, state the Law of Conservation of Momentum.

Pitanje 2
2.

A $4\text{ kg}$ cart moving at $6\text{ m/s}$ collides with a stationary $2\text{ kg}$ cart. If the $4\text{ kg}$ cart moves at $2\text{ m/s}$ after the collision, find the velocity of the $2\text{ kg}$ cart after the collision. Show every step.

Pitanje 3
3.

Which type of collision conserves BOTH momentum and kinetic energy?

Pitanje 4
4.

Below is a picture of two carts before and after a collision.

Two-panel diagram of two carts on a track labeled “Before collision” and “After collision,” with Cart 1 and Cart 2 shown in each panel and no momentum arrows drawn.

Draw arrows showing the direction and relative size of momentum for each cart before and after the collision. Label your arrows for Cart 1 and Cart 2.

Pitanje 5
5.

A $1000\text{ kg}$ car moving at $10\text{ m/s}$ rear-ends a stationary $1000\text{ kg}$ car and they lock bumpers. Find (a) their common velocity and (b) how much kinetic energy was lost. Show every step.

Pitanje 6
6.

On a scale of $1$–$5$, how confident do you feel solving momentum conservation problems? Write your rating and explain it in one sentence (example format: “4 — …”).

Pitanje 7
7.

Explain, using conservation of momentum, why a car crumpling in a crash might actually be safer than a car that stays rigid and bounces back.

In your explanation, connect your reasoning to change in momentum and the time of collision (impulse).