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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

In the absence of an external force, a moving object will:

Stop immediately.

Go faster and faster.

Slow down and eventually come to a stop.

Move with constant velocity.

An object of mass m is hanging by a string from the ceiling of an elevator. The elevator is moving up at constant speed. What is the tension in the string?

Greater than mg.

Less than mg.

Exactly mg.

Cannot be determined without knowing the speed.

Which of the following statements is correct according to Newton's first law of motion?

An object in motion eventually comes to a halt.

An object at rest remains at rest unless acted upon by a net force.

If an object at rest is acted upon by a force, it must move.

An object in motion moves in a parabolic trajectory unless acted upon by a net force.

Action-reaction forces are:

Unequal in magnitude but point in the same direction.

Unequal in magnitude and point in opposite directions.

Equal in magnitude but point in the same direction.

Equal in magnitude and point in opposite directions.

An object of mass 6000 kg rests on the flatbed of a truck. It is held in place by metal brackets that can exert a maximum horizontal force of 9000 N. When the truck is traveling 15 m/s, what is the minimum stopping distance if the load is not to slide forward into the cab?

150 m.

30 m.

75 m.

15 m.