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Rside Physics 11 Forces Flashcards | StudBud
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Rside Physics 11 Forces
Rside Physics 11 Forces
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Physics 11, Forces, Newton's Laws #forces #newtonslaws #physics11 #dynamics
Flashcards
25 cards
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Practice quiz
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Questions
25
Answers
1
In the following system of masses:
T1<T2>T3
T1<T2<T3
T1=T2=T3
T1>T2>T3
2
An elevator with mass 1000kg accelerates up at 2.0 m/s
2
. What is its weight?
19600N
9800N
2000N
1000kg
3
Which of the following is the official Star Wars
day
?
May the 4th (be with you)
December 25
February 14
April 1
4
The gravitational field strength at 2x Earth's radius from the surface is...
1/3 (9.8 N/kg)
1/2 (9.8 N/kg)
1/9 (9.8 N/kg)
1/4 (9.8 N/kg)
5
Which of the following is NOT one of the 4 fundamental forces in the universe?
Jedi
Gravity
Electromagnetic
Weak Nuclear
6
The force applied to the bullet equals the force acting back on the gun describes...
Newton's 1st Law
Newton's 2nd Law
Newton's 4th Law
Newton's 3rd Law
7
A 90 N object at Earth's surface weighs _____ at 3 x the distance from the centre of the Earth?
30 kg
10 kg
30 N
10 N
8
A 23 N force [Right] is used to pull a 10 kg box against a 3.0 N friction force. Acceleration =
2.3 m/s2 [Right]
2.0 m/s2 [Right]
10 m/s2 [Right]
20 m/s2 [Right]
9
An elevator with mass 1000kg accelerates up at 2.0 m/s
2
. What is the net force acting on it?
9800N
19600N
2000N
1000N
10
This car accelerates according to...
Newton's 4th Law
Newton's 3rd Law
Newton's 2nd Law
Newton's 1st Law
11
When Bob punches Fred in the face...
Force on Bob's hand < Force on Fred's face
Force on Bob's hand = - Force on Fred's face
Force on Bob's hand > Force on Fred's face
Force on Bob's hand = Force on Fred's face
12
An elevator cable applies a force less than the force of gravity on the elevator, it will…
slow down if moving up
move down at a constant velocity
move up at a constant velocity
slow down if moving down
13
Hooke’s Law describes the relationship between the force applied to a material and …
How hot it gets
How loud it screams
How fast it moves
How much it stretches or compresses
14
As a rocket launches successfully, which of the following is NOT NECESSARILY true?
FA>Fnet
FA>Fg
FA>Ff
Fnet>Fg
15
A 23 N force [Right] is used to pull a box against a 3.0 N friction force. The box will…
move right but slow down
speed up to the right
suddenly vanish into thin air
move to the right at a constant velocity
16
Which of the following is NOT one of Newton's Laws of Motion?
Newton's 1st Law
Newton's 2nd Law
Newton's 4th Law
Newton's 3rd Law
17
An elevator with mass 1000kg accelerates up at 2.0 m/s
2
. What is F
A
in the cable?
9800N [up]
11800N [up]
2000N [up]
19600N [up]
18
Which is true of an elevator rising at 3.0 m/s?
Fnet> 0N
The forces are not balanced
Fnet<0N
Fnet= 0N
19
This astronaut moving at a constant speed through space best describes...
Newton's 4th Law
Newton's 2nd Law
Newton's 3rd Law
Newton's 1st Law
20
The weight of this box is...
10 N
10 lbs
98 N
10 kg
21
The larger sphere doesn't accelerate faster despite having more force of gravity acting on it..
because of air friction
because gravity isn't strong enough to make a difference
because it has more inertia
because Galileo threw the smaller sphere
22
Which scientist (1600s) developed a framework for the laws of motion and universal gravitation?
Galileo Galilei
Albert Einstein
Bill Nye
Isaac Newton
23
In the legend of Galileo's experiment at Pisa, which is true?
Neither hits the ground. They are an illusion.
The smaller sphere hits the ground before the larger one.
Boths spheres hit the ground at the same time.
The larger sphere hits the ground before the smaller one
24
Which is
NOT
true of the
COEFFICIENT OF FRICTION
? It is...
directionless
greater for rougher surfaces
measured in Newtons
unitless
25
F
net
= F
A
always if …
Fg = 0 N
FA = 0N
FA is the only force acting
Ff = 0 N
