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3U Dynamics Test Review Flashcards | StudBud
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3U Dynamics Test Review
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
The acceleration of an object is proportional to
the net force acting on it
velocity of object
displacement
its position
2
The larger sphere doesn't accelerate faster despite having more force of gravity acting on it..
False - it does accelerate faster
because it has more inertia
False - it doesn't have more gravity acting on it
because of air friction
3
In the following system of masses:
T1>T2>T3
T1=T2=T3
T1<T2>T3
T1<T2<T3
4
An elevator with mass 1000kg accelerates up at 2.0 m/s
2
. What is its weight?
9800N
1000kg
2000N
19600N
5
A ball is thrown straight up. At the top of its path, the net force acting on it is
less than zero
equal to mg
greater than mg
between zero and mg
6
Which of the following is NOT one of the 4 fundamental forces in the universe?
Friction
Electromagnetic
Weak Nuclear
Gravity
7
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
8
F
net
= F
A
always if …
Ff = 0 N
FA = 0N
FA is the only force acting
Fg = 0 N
9
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]
2.0 m/s [Right]
2.3 m/s [Right]
10 m/s [Right]
10
Which of the following is the official Star Wars
day
?
25 December
1 April
14 February
4 May
11
Which is true of an elevator rising at 3.0 m/s?
Fnet<0N
The forces are not balanced
Fnet> 0N
Fnet= 0N
12
Which is
NOT
true of the
COEFFICIENT OF FRICTION
? It is...
unitless
directionless
measured in Newtons
greater for rougher surfaces
13
The gravitational field strength at 2x Earth's radius from the surface is...
1/9 (9.8 N/kg)
1/4 (9.8 N/kg)
1/3 (9.8 N/kg)
1/2 (9.8 N/kg)
14
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
move to the right at a constant velocity
suddenly vanish into thin air
speed up to the right
15
As a rocket launches successfully, which of the following is NOT NECESSARILY true?
Fnet>Fg
FA>Ff
FA>Fg
FA>Fnet
16
An elevator with mass 1000kg accelerates up at 2.0 m/s
2
. What is the net force acting on it?
9800N
2000N
19600N
1000N
17
This astronaut moving at a constant speed through space best describes...
Newton's 3rd Law
Newton's 2nd Law
Newton's 4th Law
Newton's 1st Law
18
The weight of this box is...
10 N
10 lbs
10 kg
98 N
19
A 90 N object at Earth's surface will weigh___at 3 x the distance from the centre of the Earth?
10 kg
30 N
10 N
30 kg
20
The force applied to the bullet equals the force acting back on the gun describes...
Newton's 2nd Law
Newton's 4th Law
Newton's 3rd Law
Newton's 1st Law
21
Which scientist (1600s) developed a framework for the laws of motion and universal gravitation?
Isaac Newton
Bill Nye
Galileo Galilei
Albert Einstein
