Download ISCI 2002 Quiz Chapter 3 – Newton`s Laws of Motion

ISCI 2002 Quiz
Chapter 3 – Newton’s Laws of Motion
Name___________________________________
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the
question.
1) A hockey puck is set in motion across a frozen pond. If ice friction and air resistance are
1) _______
neglected, the force required to keep the puck sliding at constant velocity is
A) 0 N.
B) equal to the weight of the puck.
C) the weight of the puck divided by the mass of the puck.
D) the mass of the puck multiplied by 10 m/s2.
E) none of the above
2) A force is a vector quantity because it has both
A) magnitude and direction.
B) mass and acceleration.
C) action and reaction counterparts.
2) _______
3) On the surface of Jupiter, where the acceleration due to gravity is about three times that of
3) _______
Earth, a 100-kg rock would have a weight of about
A) 1000 N.
B) 3000 N.
C) 6000 N.
D) 9000 N.
4) If an object's mass is decreasing while a constant force is applied to the object, the acceleration
A) decreases.
B) increases.
C) remains the same.
4) _______
5) A block is dragged without acceleration in a straight-line path across a level surface by a force
5) _______
of 6 N. What is the force of friction between the block and the surface?
A) less than 6 N
B) more than 6 N
C) 6 N
D) need more information to say
6) A car traveling at 22 m/s comes to an abrupt halt in 0.1 s when it hits a tree. What is the
6) _______
deceleration in meters per second squared of the car?
A) 110
B) 220
C) 800
D) 880
E) can't be solved without the mass of the car
7) The mass of a pet turtle that weighs 10 N is about
A) 1 kg.
B) 10 kg.
C) 100 kg.
D) 1000 kg.
E) none of the above
7) _______
8) A bag of groceries has a mass of 10 kg and a weight of about
A) 1 N.
B) 10 N.
C) 100 N.
D) 1000 N.
E) more than 1000 N.
8) _______
9) Two factors that greatly affect air resistance on falling objects are the size and
A) mass of the object.
B) weight of the object.
C) speed of the object.
9) _______
10) A heavy object and a light object are dropped at the same time from rest in a vacuum. The
10) ______
heavier object reaches the ground
A) sooner than the lighter object.
B) at the same time as the lighter object.
C) later than the lighter object.
11). An object that stays in constant motion unless accelerated by a net unbalanced force refers to Newton’s
____________ law.
12). When considering Newton’s 2 nd law acceleration is proportional to _____________.
13). Describe how ‘terminal velocity’ is achieved by a sky diver. (1 point)
ESSAY. Write your answer in the space provided or on a separate sheet of paper.
14) We say that a force is a push or a pull. How does Newton's Third Law further define force? (1 point)