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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
5/40 MCQs for:
Dynamics: Newton’s Laws of Motion
A golf club hits a golf ball with a force of 2400 N. The golf ball hits the club with a force:
Exactly 2400 N.
Slightly more than 2400 N.
Slightly less than 2400 N.
Close to 0 N.
A stone is thrown straight up. At the top of its path, the net force acting on it is:
Greater than its weight.
Instantaneously equal to zero.
Greater than zero, but less than its weight.
Equal to its weight.
A 20-N weight and a 5.0-N weight are dropped simultaneously from the same height. Ignore air resistance. Compare their accelerations.
The 5.0 N weight accelerates faster because it has a smaller mass.
They both accelerate at the same rate because they have the same weight to mass ratio.
The 20 N weight accelerates faster because it is heavier.
The 20 N weight accelerates faster because it has more inertia.
Which of Newton's laws best explains why motorists should buckle-up?
the second law.
The third law.
The first law.
The law of gravitation.
An object of mass m sits on a flat table. The Earth pulls on this object with force mg, which we will call the action force. What is the reaction force?
The table pushing down on the floor with force mg.
The object pulling upward on the Earth with force mg.
The object pushing down on the table with force mg.
The table pushing up on the object with force mg.
