C-03 — Force

According to Newton's first law of motion, a stationary object remains stationary unless—

According to Newton's first law, an object in uniform motion will—

For uniform motion of a body, since velocity is a vector, it must move—

In daily life, a moving body comes to rest because—

From Newton's first law we can—

If all opposing forces could be removed, a body in uniform motion would—

The property of a body to resist any change in its state of rest or motion is called—

When a stationary car suddenly starts moving, passengers move backward due to—

A passenger getting down from a moving bus tends to fall forward because of—

As the mass of a body increases, its inertia—

In the card-coin experiment, when the card on a glass is flipped quickly, the coin falls into the glass because of—

When the same force is applied to two objects, the one that deviates more is the one with—

Which of the following is an example of inertia of motion?

Force is the quantity which—

From which of Newton's laws is force first measured?

Lifting a heavy load with a crane is an example of—

Falling of a body downward due to earth's gravity is an example of—

Forces in daily life are broadly divided into—

How many fundamental forces exist in nature?

Which of the following is NOT a fundamental force?

Consider the following:

The mutual attraction between two bodies due to their mass is called—

Earth revolves around the sun due to—

The pull of earth's gravity on us produces our—

Combing dry hair attracts small pieces of paper due to—

Compared with gravitational force, electromagnetic force is—

Although seemingly different in nature, electric and magnetic forces are actually—

The weak nuclear force acts within a distance of approximately—

The emission of beta rays (electrons) from a radioactive nucleus is due to—

Compared to the electromagnetic force, the weak nuclear force is approximately—

The strongest force in the universe is—

The strong nuclear force acts within a range of approximately—

The strong nuclear force is responsible for—

Strong nuclear force is approximately how many times stronger than electromagnetic force?

Huge energy released by splitting a large nucleus or by joining small nuclei is due to—

Of the four fundamental forces, two have already been unified by a single law. They are—

When the resultant of two or more forces acting on a body is zero, the forces are said to be—

A body acted upon by balanced forces will have—

An object hangs stationary by a thread. The two forces acting are weight downward and—

When the thread holding a stationary suspended object is cut, the unbalanced force on the object is—

A heavy book tied by a rope and pulled from both ends cannot be made completely straight because—

A pendulum bob displaced sideways and released will oscillate because—

Momentum of a body is defined as—

The unit of momentum is—

The dimension of momentum is—

Momentum is a—

Which particle has momentum but no mass?

A truck and a bicycle moving with the same velocity hit a small car. The truck causes more damage because it has greater—

A ball of mass 100 g thrown at a wall with velocity 10 m/s bounces back with the same speed. The change in momentum is—

The law of conservation of momentum states that, in the absence of an external force, the combined momentum of a system after collision is—

For two masses $m_{1}$ and $m_{2}$ with initial velocities $u_{1},u_{2}$ and final velocities $v_{1},v_{2}$, conservation of momentum gives—

The kinetic energy of an object of mass m moving with velocity u is—

When two equal masses collide elastically along a straight line, they—

A moving marble strikes head-on a stationary marble of equal mass. After collision the moving marble—

Conservation of kinetic energy in a two-body elastic collision is expressed as—

If the speed of a vehicle is doubled, its kinetic energy becomes—

The easiest way to minimize losses in a road accident is to—

In a head-on collision between a heavy truck and a small car (mass approximated as zero) coming with the same speed u, the small car will—

After head-on collision with a small car of negligible mass, the heavy truck approximately—

Most road accidents in our country occur due to—

Newton's second law states that the rate of change of momentum of a body is—

The equation of Newton's second law (with the proportionality constant equal to 1) is—

The SI unit of force is—

The dimension of force is—

A force of 100 N is applied on a stationary body of mass 5 kg. The acceleration produced is—

A 5 kg body acted upon by 100 N for 10 s reaches a velocity of—

After the 100 N force is removed at t = 10 s, the velocity of the same body at t = 20 s is—

The total distance travelled in 20 s by the same body (force applied only in the first 10 s) is—

A force of 20 N applied on a stationary object for 10 s makes it cover 100 m. The mass of the object is—

Newton's second law is valid for—

According to Newton's law of gravitation, the force between two masses $m_{1}$ and $m_{2}$ separated by distance r is—

The value of universal gravitational constant G is—

The weight of an object on the earth's surface is computed using—

The mass of the earth is approximately—

The radius of the earth is approximately—

The acceleration due to gravity g on the earth's surface is approximately—

The expression for g at the earth's surface is—

At a space station 100 km above the earth's surface, the value of g' is approximately—

Although g is not zero at the space station, an astronaut feels weightless because—

The gravitational force exerted on a mass m by the earth (mass M, radius R) is—

Newton's third law of motion states that—

Why do action and reaction forces NOT cancel each other?

While walking on hard ground, we move forward because—

Walking is difficult on a smooth surface lubricated with oil because—

When a 1 kg object is released from a height, the acceleration of the earth toward the object is approximately—

On a totally frictionless surface, a 50 kg person pushes a 100 kg stone with a force of 50 N. The acceleration of the stone is—

In the same scenario, the person's acceleration (in the opposite direction) is—

After pushing the 100 kg stone for 2 s with 50 N (frictionless), the velocity of the stone is—

After 2 s of pushing, the velocity of the 50 kg person (in the opposite direction) is—

Frictional force always acts—

Apparently smooth surfaces seen under a microscope appear—

The cylinder of a car engine needs cooling because of heat generated by—

If the load on a wooden block is increased, the frictional force between the block and the table—

Friction is divided into how many types?

Friction acting between two surfaces at rest relative to each other is called—

The maximum static friction is given by—

Friction acting between two surfaces in motion relative to each other is—

Kinetic friction is expressed as—

The friction developed when an object rolls on a surface is called—

Among the three types of friction, the least powerful is—

Suitcases are fitted with wheels because—

A bicycle brake stops the wheel mainly due to—

We can walk on the ground without slipping due to—

If a match box on an inclined book just begins to slide at angle θ, the coefficient of static friction equals—

Treads (grooves) are designed on car tyres to—

Snowy roads in cold countries cause more accidents because—

Pitch (bitumen) carpeted roads—

When the brake pedal is pressed, friction develops between—

A car gets stuck in mud despite the wheel rotating because—

Lubricants like oil and grease are used to—

Ball bearings reduce friction by replacing—

Streamlined design of cars and aeroplanes is meant to—

Consider the following measures:

Which one INCREASES friction?

Reducing the vertically applied force on frictional surfaces—

Heat produced in winter by rubbing the hands together is generated by—

Friction is best described as a—

Consider the following:

The tendency or property of a body to maintain its present state for ever is called—

Which one is the dimension of force?

Which one is the unit of momentum?

A force of 50 N is applied on a body of mass 5 kg. Its acceleration will be—

If a mass of 10 kg moves with a velocity of 10 m/s, its momentum will be—

A balanced force on an object means the resultant force is—

Frictional force is generated because of—

Faruque pulls a 4 kg box on the floor with a constant force; friction is 1.5 N and the box accelerates at 0.8 m/s². The applied force is—

On a frictionless floor with the same applied force on the same 4 kg box, the acceleration becomes—

A 1000 kg private car is acted upon by a 1000 N force; friction from the road is 200 N. The acceleration of the car is—

Between a 1000 kg private car and a 6000 kg truck, inertia is greater for—

What is rolling friction?

The law of conservation of momentum means—

Compared with the weak nuclear force, the strong nuclear force is—

Why are grooves designed on car tyres?

Controlling a car's speed is the first step in avoiding road accidents because—