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Select Lessons (39)
Dynamics: Newton’s Laws of Motion
ELECTRICITY: Current
ELECTRICITY: Current
ELECTRICITY: Resistance
Elasticity
Electric fields
Electromagnetism
Electromagnetism
Energy: Application And Uses
Experimental physics
Forces
Gravitational fields
Heat
Kinematics in Two Dimensions: Vectors, projectiles
Kinematics in one dimension
Linear Momentum
MOTION
MOTION
MOTION
MOTION
MOTION
MOTION: Circular
MOTION: Collision
MOTION: Inclined plane
MOTION: Simple harmonic motion (SHM)
Magnetism
Optics
PLASTICS
PRESSURE
Radioactivity
TEMPERATURE
The Laws of Thermodynamics
Units System
Units System
Units, dimensions and homogeneity
WAVES: Electromagnetic
WAVES: Electromagnetic
WAVES: Sound
5/31 MCQs for:
Kinematics in one dimension
If the velocity of an object is zero, does it mean that the acceleration is zero? Support your answer with an example.
No, and an example would be an object coming to a stop.
Yes, because of the way in which acceleration is defined.
Yes, because of the way in which velocity is defined.
No, and an example would be an object starting from rest.
Ball A is dropped from the top of a building. One second later, ball B is dropped from the same building. As time progresses, the difference in their speeds
Increases.
Decreases.
Remains constant.
Cannot be determined from the information given.
When an object is released from rest and falls in the absence of friction, which of the following is true concerning its motion?
None is true.
The speed of the falling object is proportional to its weight.
The speed of the falling object is proportional to its mass.
The speed of the falling object is inversely proportional to its surface area.
An object is moving with constant non-zero velocity in the +x axis. The position versus time graph of this object is:
A horizontal straight line.
A parabolic curve.
A straight line making an angle with the time axis.
A vertical straight line.
An object is moving with constant non-zero velocity in the +x axis. The velocity versus time graph of this object is:
A parabolic curve.
A vertical straight line.
A straight line making an angle with the time axis.
A horizontal straight line.
