Laws of Motion One Mark Online Test

Laws of Motion One Mark Online Test (10th Standard Science)

Pick how many questions you want and set a time limit, then start. You'll get your score at the end with the correct answer and an explanation for every question. Free, in Tamil and English — 25 questions available.

Set up your test

Number of questions

Time limit

Time remaining00:00

Inertia of a body depends on

A.weight of the object B.acceleration due to gravity of the planet C.mass of the object D.Both a & b

Impulse is equals to

A.rate of change of momentum B.rate of force and time C.change of momentum D.rate of change of mass

Newton's III law is applicable

A.for a body is at rest B.for a body in motion C.both a & b D.only for bodies with equal masses

Plotting a graph for momentum on the Y-axis and time on X-axis. slope of momentum-time graph gives

A.Impulsive force B.Acceleration C.Force D.Rate of force

In which of the following sport the turning of effect of force used

A.swimming B.tennis C.cycling D.hockey

The unit of 'g' is m s-2. It can be also expressed as

A.cms-1 B.Nkg-1 C.Nm2kg-1 D.cm2s-2

One kilogram force equals to

A.9.8 dyne B.9.8 × 10⁴ N C.98 × 10⁴ dyne D.980 dyne

The mass of a body is measured on planet Earth as M kg. When it is taken to a planet of radius half that of the Earth then its value will be____kg

A.4 M B.2M C.M/4 D.M

If the Earth shrinks to 50% of its real radius its mass remaining the same, the weight of a body on the Earth will

A.decrease by 50% B.increase by 50% C.decrease by 25% D.increase by 300%

Q10

To project the rockets which of the following principle(s) is /(are) required?

A.Newton's third law of motion B.Newton's law of gravitation C.law of conservation of linear momentum D.both a and c

Q11

Which branch of mechanics deals with the study of moving bodies without considering the cause of their motion?

A.Statics B.Kinetics C.Kinematics D.Dynamics

Q12

According to the Greek philosopher Aristotle, what is the term used to describe a force-independent motion where a moving body naturally comes to rest?

A.Natural motion B.Violent motion C.Inertial motion D.Unbalanced motion

Q13

According to Galileo's concepts, what happens when different bodies of different size, shape, and mass are dropped from a height in vacuum?

A.The heavier body falls faster than the lighter body. B.They fall at the same rate and reach the ground at the same time. C.The lighter body falls faster due to less resistance. D.They remain suspended because there is no gravity in vacuum.

Q14

When a passenger in a moving vehicle tends to lean sideways during a sharp turn, which type of inertia is being demonstrated?

A.Inertia of rest B.Inertia of motion C.Inertia of direction D.Inertia of mass

Q15

What is the unit of linear momentum in the C.G.S system?

A.kg m s-1 B.g cm s-1 C.N s D.dyne s

Q16

Newton's first law of motion provides the scientific definitions for which of the following concepts?

A.Force and Inertia B.Mass and Acceleration C.Momentum and Friction D.Gravity and Weight

Q17

Two parallel unequal forces of 15 N and 5 N act in opposite directions on a body. What is the net resultant force and its direction?

A.20 N in the direction of the 15 N force B.10 N in the direction of the 15 N force C.10 N in the direction of the 5 N force D.0 N since the forces are in opposite directions

Q18

A door is pushed, at a point whose distance from the hinges is 90 cm, with a force of 40 N. Calculate the moment of the force about the hinges.

A.3.6 N m B.36 N m C.360 N m D.3600 N m

Q19

Because Newton's second law of motion helps us measure the amount of force acting on a body, it is also known as the:

A.Law of inertia B.Law of force C.Law of moments D.Law of momentum

Q20

In a uniform circular motion, even though the speed of the body remains constant, the direction of velocity changes at every point. What is the direction of the resulting centripetal acceleration?

A.Tangential to the circular path B.Along the radius, pointing away from the center C.Along the radius, pointing toward the center D.Opposite to the direction of motion

Q21

Which of the following describes the definition of 1 dyne of force in the C.G.S system?

A.The force that produces an acceleration of 1 m s-2 in a mass of 1 g B.The force that produces an acceleration of 1 cm s-2 in a mass of 1 kg C.The force that produces an acceleration of 1 cm s-2 in a mass of 1 g D.The force that produces an acceleration of 9.8 m s-2 in a mass of 1 g

Q22

Under what condition is the algebraic sum of the linear momentum of a system of colliding bodies conserved?

A.Only if the collision is perfectly elastic B.In the absence of an external net force C.Only if the masses of the bodies are equal D.If the temperature of the system remains constant

Q23

What is the value and SI unit of the universal gravitational constant (G)?

A.\(6.674 x 10^-11 N m2\) kg-2 B.\(6.674 x 10^-11 N m\) kg-2 C.9.8 m s-2 D.\(6.674 x 10^-11\) dyne cm2 g-2

Q24

What is the apparent weight (R) of a person of mass m in a lift that is at rest or moving with uniform velocity?

A.R = m(g + a) B.R = m(g - a) C.R = mg D.R = 0

Q25

Why do astronauts in an orbiting space shuttle experience weightlessness?

A.Because there is no gravity in the orbit of the space shuttle B.Because they and the space shuttle are in a state of free fall under gravity C.Because the centrifugal force completely neutralizes gravity D.Because the mass of the astronauts becomes zero in space

More for this chapter

About this Laws of Motion test

This free online practice test covers Laws of Motion from the 10th Standard Science (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

More chapters in Science

View all