Physics A Unit 3: Energy and Motion 15. What are the SI units for momentum? ( po

Question

Physics A Unit 3: Energy and Motion 15. What are the SI units for momentum? ( point) N·m kg·m/s 16. Which of the following has the greatest momentum? ( point) a tortoise with a mass of 275 kg moving at a velocity of 0.55 ms O a hare with a mass of 2.7 kg moving at a velocity of 7.5 m/s Oa turtle with a mass of 91 kg moving at a velocity of 1.4 m/s O a roadrunner with a mass of 1.8 kg moving at a velocity of 6.7 m/s 17. Which of the following equations can be used to directly calculate an object's impulse? ( point) Op=Fat A 20 kg shopping cart moving at a velocity of 0.5 m's collides with a store wall and stops. The p momentum of the shopping cart 8. 2 r5

Explanation / Answer

15)

SI unit of Momentum = kg.m/s

Momentum = Mass * velocity

16)

momentum given by

p = mass * velocity

for option 1st

p = 275 * 0.55 = 151.25 kg*m/s [this is maximum for all option]

17)

impulse define as

p = force * time

p = F*delta t

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