Unit 4 Games: Momentum

Unit overview · Topics: 4.1 · 4.2 · 4.3 · 4.4 · Practice set

Four games, each with levels from easy to hard. Pass a level to unlock the next. Your best score on each level is saved on this device. Everything works with a keyboard or a touch screen: use the sliders, number boxes and buttons.

1. Collision lab challenge

Each level gives you a target. Set the free values (the fixed ones are greyed out), press Launch, and watch the crash. Right is +. Hit the target closely to score up to 100.

2. Egg drop impulse

The cushion must take away the egg's momentum, Δp = mv. The longer the stop lasts, the smaller the force (F = Δp/Δt). But a longer stop needs a thicker cushion, so do not overdo it. Press Drop to test.

3. Momentum bar chart puzzle

Bars show momentum in kg·m/s (up = +, down = −). Fill in the missing bar so that total after = total before + outside impulse. First try scores 100, second 60, later 30.

4. Elastic or inelastic? quick-fire

Eight collisions per level. Decide: elastic (KE the same), inelastic (KE lost, carts separate), perfectly inelastic (carts stuck: same final velocity), or impossible (momentum not conserved, or KE gained from nowhere). Get 6 right to pass. Streaks earn bonus points.