Kuiz Fizik Tingkatan 5 Bab 1 Set 1

SELAMAT DATANG Kuiz Fizik Tingkatan 5 Bab 1 Set 1

KUIZ INI MENGANDUNGI 10 SOALAN

What is the primary condition for an object to be in a state of equilibrium of forces?

There are no forces acting on the object

The resultant force acting on the object is zero

The object must be stationary

The forces acting on it are all equal in magnitude

None

A block of weight 50 N is at rest on a smooth inclined plane at an angle of 40∘ to the horizontal. A frictional force, F R, prevents it from sliding down. What is the magnitude of this frictional force?

50sin40∘ N

50tan40∘ N

50cos40∘ N

50 N

None

A free-body diagram for a book resting on a horizontal table would show which of the following forces acting on the book?

The weight of the book and the force the book exerts on the table

Only the weight of the book acting downwards

The weight of the book and the normal reaction force from the table

Only the normal reaction force from the table acting upwars

None

According to Newton's Second Law, if a non-zero resultant force acts on an object, what is the state of the objects motion?

The object is at rest

The object moves with a decreasing velocity at a constant rate

The object moves with a constant velocity

The object is accelerating

None

The graph of force (F) versus extension (x) for a spring is plotted. What does the gradient of this graph represent?

The extension per unit force

The work done in stretching the spring

The maximum force the spring can withstand

The spring constant, k

None

Which of the following factors does NOT affect the spring constant of a coil spring?

The thickness of the spring’s wire

The original length of the spring

The gravitational field strength where the spring is used

The material the spring is made from

None

Hooke's Law states that the extension of a spring is directly proportional to the applied force. What is the condition under which this law is valid?

Under all conditions of stretching or compression

Only if the force applied is a pulling force

If the elastic limit is not exceeded

As long as the spring is made of metal

None

A car is moving at a constant velocity of 20 m s−1. The engine provides a forward thrust of 1500 N. What is the magnitude of the total resistive force (air resistance and friction) acting on the car?

0 N

Greater than 1500 N

1500 N

Less than 1500 N

None

A coconut with a mass of 2.0 kg is falling with an acceleration of $9.0 m s^{-2}$ . Given that the gravitational acceleration $g = 9.81 m s^{-2}$ , calculate the magnitude of the air resistance acting on it.

37.62N

1.62N

18.0N

19.62N

None

10.

Which of the following describes the property of 'elasticity'?

The ability of a material to be stretched into a thin wire

The ability of an object to deform permanently under an applied force.

The ability of a material to resist scratching and abrasion

The ability of an object to return to its original shape and size after a deforming force is removed

None

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