Let’s solve each part step by step.
---
1a) Athlete: mass = 60 kg, velocity = 10 m/s
Momentum = Mass × Velocity
= 60 kg × 10 m/s
=
600 kg·m/s
---
1b) Ship: mass = 200,000 kg, velocity = 5 m/s
Momentum = Mass × Velocity
= 200,000 kg × 5 m/s
=
1,000,000 kg·m/s
---
1c) Rocket: mass = 650,000 kg, velocity = 2 km/s
Wait — the unit for velocity is given in
km/s, but momentum uses
m/s. We must convert!
2 km/s = 2 × 1000 =
2000 m/s
Now calculate:
Momentum = 650,000 kg × 2000 m/s
=
1,300,000,000 kg·m/s
(That’s 1.3 billion!)
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1d) Mouse: mass = 500 g, velocity = 3 m/s
The worksheet asks for answer in
gm/s (grams × meters per second), so we don’t need to convert grams to kilograms here.
Momentum = Mass × Velocity
= 500 g × 3 m/s
=
1500 gm/s
*(Note: In science, we usually use kg·m/s, but since the question specifically says “gm/s”, we follow that.)*
---
Final Answer:
1a) 600 kg·m/s
1b) 1,000,000 kg·m/s
1c) 1,300,000,000 kg·m/s
1d) 1500 gm/s
Parent Tip: Review the logic above to help your child master the concept of momentum worksheet.
