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Newton's Laws of Motion Flashcards | StudBud
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Newton's Laws of Motion
Newton's Laws of Motion
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Physics unit on Forces. Newton's Laws of motion and universal forces. #newtonslaws #forces
Flashcards
20 cards
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Questions
20
Answers
1
When a pair of balanced forces acts on an object,
the object accelerates
the net force is zero
the weight of the object decreases
the weight of the object increases
2
Newton's 3rd law describes
action reaction forces
net force
balanced forces
inertia
3
The mass of a newborn baby is 2 kilograms. What is the baby’s weight?
19.6 N
19.6 lbs
2 lbs
4.9 N
4
How do you feel about your knowledge of forces in preparation for this test?
Not bad
I need to study A LOT
Awesome!
I need to study a little
5
As you push a cereal box across a tabletop, the sliding friction acting on the cereal box
acts in the direction of the motion
is usually greater than static friction
acts in the direction opposite of motion.
equals the weight of the cereal box
6
An object weighs less on the moon than it does on the Earth.
False
True
7
Action-reaction forces don't cancel each other because they...
act in the same direction
act on different objects
act in different directions
act on the same object
8
Newton’s 2nd law, the acceleration of an object equals the net force on it divided by its
velocity
weight
momentum
mass
9
No force is required to keep an object moving in a given direction.
False
True
10
Weight is measured in pounds; mass is measured in Newtons.
True
False
11
If an object is at rest, then there are no forces acting upon the object.
False
True
12
Which of the following relationships is correct
1 N = 1 kg·m
1 N = 1 kg·m/s2
1 N = 1 kg
1 N = 1 kg·m/s
13
An object has acceleration of 30 m/s/s and a mass of 15 kg. What is the the Force?
2 N
450 kg m/s
2 kg m/s
450 N
14
The property of matter that resists changes in motion is
inertia
friction
momentum
weight
15
The forces acting on a falling leaf are
weight and rolling friction
gravity and air resistance
air resistance and fluid friction
gravity and static friction
16
When an unbalanced force acts on an object,
the weight of the object decreases
the object's motion does not change
the object accelerates
the weight of the object increases
17
The force of gravity acting on an object is the object's
inertia
momentum
mass
weight
18
When you push on a wall, the wall pushes back on you.
True
False
19
The sum of all forces acting on an object is
terminal velocity
net force
weight
gravity
20
An object has 30 N force acting on it and a mass of 20 kg. What is the acceleration?
600 N
1.5 m/s2
1.5 N
600 m/s2
