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Duplicate of 3U Dynamics Test Review Flashcards | StudBud
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Duplicate of 3U Dynamics Test Review
Duplicate of 3U Dynamics Test Review
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Physics 11, Forces, Newton's Laws, sph3u, dynamics #forces #newtonslaws #physics11 #dynamics
Flashcards
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Questions
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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 the net force acting on it?
2000N
19600N
1000N
9800N
3
Which of the following is the official Star Wars
day
?
25 December
1 April
14 February
4 May
4
The force applied to the bullet equals the force acting back on the gun describes...
Newton's 2nd Law
Newton's 1st Law
Newton's 4th Law
Newton's 3rd Law
5
The larger sphere doesn't accelerate faster despite having more force of gravity acting on it..
because of air friction
because it has more inertia
because gravity isn't strong enough to make a difference
False - it does accelerate faster
6
This astronaut moving at a constant speed through space best describes...
Newton's 2nd Law
Newton's 4th Law
Newton's 3rd Law
Newton's 1st Law
7
The gravitational field strength at 2x Earth's radius from the surface is...
1/3 (9.8 N/kg)
1/9 (9.8 N/kg)
1/4 (9.8 N/kg)
1/2 (9.8 N/kg)
8
Which scientist (1600s) developed a framework for the laws of motion and universal gravitation?
Bill Nye
Albert Einstein
Galileo Galilei
Isaac Newton
9
F
net
= F
A
always if …
Ff = 0 N
FA is the only force acting
FA = 0N
Fg = 0 N
10
Which of the following is NOT one of the 4 fundamental forces in the universe?
Friction
Electromagnetic
Gravity
Weak Nuclear
11
The acceleration of an object is proportional to
its position
displacement
velocity of object
the net force acting on it
12
An elevator with mass 1000kg accelerates up at 2.0 m/s
2
. What is its weight?
1000kg
9800N
19600N
2000N
13
Which is
NOT
true of the
COEFFICIENT OF FRICTION
? It is...
directionless
greater for rougher surfaces
unitless
measured in Newtons
14
Which is true of an elevator rising at 3.0 m/s?
Fnet<0N
Fnet= 0N
Fnet> 0N
The forces are not balanced
15
A ball is thrown straight up. At the top of its path, the net force acting on it is
between zero and mg
less than zero
equal to mg
greater than mg
16
A 23 N force [Right] is used to pull a box against a 3.0 N friction force. The box will…
speed up to the right
move to the right at a constant velocity
move right but slow down
suddenly vanish into thin air
17
A 23 N force [Right] is used to pull a 10 kg box against a 3.0 N friction force. Acceleration =
20 m/s [Right]
2.3 m/s [Right]
10 m/s [Right]
2.0 m/s [Right]
18
The weight of this box is...
10 kg
10 lbs
10 N
98 N
19
A 90 N object at Earth's surface will weigh___at 3 x the distance from the centre of the Earth?
30 kg
10 N
30 N
10 kg
20
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
21
As a rocket launches successfully, which of the following is NOT NECESSARILY true?
FA>Ff
FA>Fg
FA>Fnet
Fnet>Fg
