- 1. Kinematics is a branch of classical mechanics that describes the motion of points, bodies, and systems of bodies without considering the forces that cause them to move. It deals with the concepts of position, velocity, acceleration, and time, and how these quantities are related to each other. Kinematics aims to study and understand the patterns and types of motion that objects undergo, regardless of the causes behind the motion. By analyzing the motion of objects through kinematics, scientists and engineers can predict future positions, velocities, and accelerations based on initial conditions and constraints, which is vital in fields such as physics, engineering, and robotics.
What is the definition of kinematics?
A) The science of sound waves.
B) The study of heat transfer.
C) The study of electricity and magnetism.
D) The branch of physics that deals with the motion of objects.
- 2. What is the SI unit of speed?
A) Miles per hour (mph)
B) Meters per second (m/s)
C) Kilometers per hour (km/h)
D) Feet per second (ft/s)
- 3. An object is thrown vertically upwards. When does it have zero velocity?
A) At every point in its trajectory
B) At the moment it is released
C) At the highest point of its trajectory
D) At the lowest point of its trajectory
- 4. What can you infer about a body if its velocity-time graph is a straight line at an angle to the time axis?
A) The body is at rest
B) The body is moving with constant velocity
C) The body is decelerating
D) The body is undergoing constant acceleration
- 5. Which term refers to the rate at which the velocity of an object changes with time?
A) Acceleration
B) Displacement
C) Distance
D) Speed
- 6. What is the acceleration of an object in uniform circular motion?
A) Centripetal acceleration
B) Angular acceleration
C) Tangential acceleration
D) Linear acceleration
- 7. Which of the following is a scalar quantity in kinematics?
A) Displacement
B) Velocity
C) Acceleration
D) Speed
- 8. In kinematics, what does a negative acceleration indicate?
A) Increase in speed
B) Constant velocity
C) No motion
D) Deceleration
- 9. Which kinematic equation relates initial velocity, final velocity, acceleration, and displacement?
A) v = u + at
B) v = u + 1/2at
C) v2 = u2 + 2as
D) s = ut + (1/2)at2
|