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Mechanics n that Flashcards | StudBud
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Mechanics n that
Mechanics n that
14 terms
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StudBud Administration
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9 plays
Mechanics from Matt and Jack presented by your boi KJU
Flashcards
14 cards
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Practice quiz
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Host live
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Questions
14
Answers
1
Ben drops Jack off a cliff. How far does he fall in the third second. Assume g=10ms^-2
10m
45m
20m
25m
2
What’s the density of water?
598.2kg/m^3(Jack)
997kg/m^3
990kg/m^3
1000kg/m^3
3
If an object of a collision involves a loss of translational kinetic energy what type is it?
Elastic
Neither elastic nor inelastic
Inelastic
4
What are the SI units for Newtons?
Kg ms^2
N
Kg ms^-1
Kg m/s^2
5
Gabe jogs at 2m/s in a line for 30s, returns to origin 20s later. What is her average speed?
2ms^-1
2.8ms^-1
2.4ms^-1
2.5ms^-1
6
What are the units of pressure?
Kg m/s^2
Nm^2
Pa
Kg m^2/s^2
7
What are the units for momentum
Kg ms
Kg m^2/s^2
Kg m/s^2
Kg m/s
8
Who is the most powerful person in the class?
Aaron
Gabriel
Musti
Louis
9
A lift has a total mass of 500kg and accelerates upwards at 2ms^-2. What’s the tension of cable
6000N
4000N
3000N
1000N
10
Can Pete defy the laws of physics?
Yes
Most Definitely
He IS Physics
Probably
11
A neutron at 1.2x10^-2 m/s has a collision and rebounds at 4x10^6 off a wall is it (in)elastic?
It is neither elastic nor inelastic
It is an elastic collision
It is an inelastic collision
12
Rocket’s mass=12000kg accelerates from earth at 1.4ms^-2. What is the thrust of the rocket?
1.3x10^5 N
1.7x10^5 N
1.6x10^5 N
1.7x10^4 N
13
Object falls freely from rest. Falls d. Velocity v. What’s the velocity after it has fallen 2d?
2 v^2
2 v
4 v
√2 v
14
Car‘s thrust=230kN in 1 instant. The mass is 11000kg. Its a=2.9m/s^2. What’s the air resistance
31900N
198100N
219000N
261900N
