# Chapter 12 Review 3 Question Preview (ID: 596)

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Newton's Laws Of Motion.
TEACHERS: click here for quick copy question ID numbers.

**What is the momentum of a 60 kg ice skater gliding across the ice at a speed of 2 m/s**

a) 60 kg

b) 240 kgxm/s

c) 30 kg/ m/s

d) 120 kgxm/s

**The gravitational force between two objects increases as mass**

a) decreases or distance decreases

b) decreases or distance increases

c) increases or distance decreases

d) increases or distance increases

**The mass of a newborn baby is 3.9 kg. What is the baby's weight?**

a) 38.2 N

b) 23 N

c) 3.9 N

d) 9.8 N

**A 36 kg canoe broke free of its dock and is now floating downriver at a speed of 2.9 m/s. What is the canoe's momentum?**

a) 9.8 kgxm/s

b) 145 kgxm/s

c) 104.4 kgxm/s

d) 38.2 kgxm/s

**What happens to the magnitude of the fluid friction acting on a submarine as the submarine's speed increases?**

a) It decreases

b) It Increases

c) It does not change

d) Not enough information to tell

**Why don't action-reaction forces cancel each other out**

a) the action force is larger

b) the reaction force is larger

c) Act on different objects

d) they do cancel each other out

**What law states that if no net force acts on a system, then the total momentum of the system does not change?**

a) Newton's first law

b) Newton's second law

c) Newton's third law

d) The law of conservation of momentum

**If three balls are released at the same time from the same height, which one will hit the ground first?**

a) Ball 1

b) Ball 2

c) Ball 3

d) The will each hit at the same time

**How are the size and direction of action-reaction forces related?**

a) Equal in size, equal in direction

b) Opposite in size, equal in direction

c) Equal in size, opposite in direction

d) Opposite in size, Opposite in direction

**How can you double the acceleration of an object if you cannot alter the object's mass?**

a) Double the mass

b) Double the force

c) Cut the mass in half

d) Cut the force in half

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