15128989
Beschreibung
Quiz von Jeffrey Piggott, aktualisiert more than 1 year ago
|
Erstellt von Jeffrey Piggott
vor etwa 6 Jahre
|
|
Frage 1
Frage
A system is composed of two blocks. The blocks, sliding on a horizontal frictionless surface, collide and stick together. Which of the following statements are correct regarding the system? There are two correct answers.
Antworten
-
This is an open system.
-
This is a closed system.
-
Friction is an external force on this system.
-
There is no net external force on this system.
Frage 2
Frage
A system is composed of two blocks. The blocks, sliding on a horizontal frictionless surface, collide and bounce apart.
Which of the following statements are correct regarding the system? There are two correct answers.
Antworten
-
This is an open system.
-
This is a closed system.
-
Friction is an external force on this system.
-
There is no net external force on this system.
Frage 3
Frage
For the two physical quantities, impulse and force, which one of the following is correct?
Antworten
-
A Impulse is a scalar and force is a scalar.
-
B Impulse is a scalar and force is a vector.
-
C Impulse is a vector and force is a scalar.
-
D impulse is a vector and force is a vector.
Frage 4
Frage
The rate of change of momentum of a body falling freely under gravity is equal to its ..........
Antworten
-
A weight.
-
B power.
-
C kinetic energy.
-
D potential energy.
Frage 5
Frage
A force, F, varies with time, t, as shown by the graph and is applied to a body initially at rest on a smooth surface.
What is the momentum of the body after 5.0 s?
Antworten
-
A zero.
-
B 12.5 N s.
-
C 25 N s.
-
D 50 N s.
Frage 6
Frage
A particle of mass m strikes a rigid wall perpendicularly from the left with velocity v.
If the collision is perfectly elastic, the change in momentum of the particle which occurs as a result of the collision is ......
Antworten
-
A 2mv to the right.
-
B 2mv to the left.
-
C mv to the left.
-
D zero.
Frage 7
Frage
The graph shows how the force acting on a body changes with time.
The body has a mass of 0.25 kg and is initially at rest. What is the speed of the body after 40 s assuming no other forces are acting?
Image:
Q7 (binary/octet-stream)
Antworten
-
A 200 m.s^–1
-
B 400 m.s^–1
-
C 800 m.s^–1
-
D 1600 m.s^–1
Frage 8
Frage
Which one of the following statements is correct?
The force acting on an object is equivalent to .......
Antworten
-
A its change of momentum.
-
B the impulse it receives per second.
-
C the energy it gains per second.
-
D its acceleration per metre.
Frage 9
Frage
The graph shows the variation with time, t, of the force, F, acting on a body.
What physical quantity does the area X represent?
Image:
Q9 (binary/octet-stream)
Antworten
-
A the displacement of the body
-
B the acceleration of the body
-
C the change in momentum of the body
-
D the change in kinetic energy of the body
Frage 10
Frage
A rail truck X travels along a level track and collides with a stationary truck Y. The two trucks move together at the same velocity after the collision.
Which line, A to D, in the table states how the total momentum and the total kinetic energy of the trucks change as a result of the impact.
Image:
Q11 (binary/octet-stream)
Antworten
-
A
-
B
-
C
-
D
Frage 11
Frage
The graph shows how the force on a glider of mass 2000 kg changes with time as it is launched from a level track using a catapult.
Assuming the glider starts at rest what is its velocity after 40 s?
Image:
Q12 (binary/octet-stream)
Antworten
-
A 2.5 m.s^–1
-
B 10 m.s^-1
-
C 50 m.s^-1
-
D 100 m.s^-1
Frage 12
Frage
Which of the following is a possible unit for rate of change of momentum?
Antworten
-
A N.s
-
B N.s^-1
-
C kg.m.s^-1
-
D kg.m.s^-2
Möchten Sie mit GoConqr kostenlos Ihre eigenen Quiz erstellen? eigenen Mehr erfahren.