PHYSICS [1 Mark Question Answer]

No, every force does not produce motion in every type of body.

While catching a fast moving ball, we always pull our hands backwards to increase reaction time so force experienced would decrease.

Force decreases the momentum of ball and finally stops the ball.

Force provides retardation to the car and finally stops the car.

Force produces stretching in the rubber.

Force changes the shape of skin.

Force applied is equal to the product of mass and acceleration produced in the body. F = mass X acceleration.

The force that acts on a body for a very short time but produces a large change in its momentum, is known as impulsive force.

No, force is a vector quantity.

The force exerted by string on the block is equal to the tension in the string and this is also equal to the 20N.

The force exerted by the block on is the weight of box and that is equal to 20N.

Free fall means motion of a body under the gravity of earth only.

g' is acceleration due to earth's gravity and 'G' is universal gravitational constant.

A moon rocket needs to reach a certain velocity because during its motion earth attracts the rocket towards it by its gravitational force.

Atmosphere does not escape because molecules of atmosphere are attracted by earth due to the gravitational force of the earth.

Objects fall on the earth due to gravitational force between the earth and object.

Spring scale is used to measure the weight of a body.

Newton stated the law of inertia.

1 Newton is the force which when applied to a body of unit mass produces a unit acceleration in it. > >

According to Newton's third law, every action has equal and opposite reaction so force exerted by the wall on the boy is 30 N.

As these forces are balanced so they will not affect the motion and motion of the body will remain unaffected.

No, the body will not move as the two forces are equal and opposite and they constitute balanced forces.

Force is equal to the rate of change of linear momentum.

Ball moving on a table top stops eventually due to force of friction between the ball surface and table surface.

Force is that external agency which tends to change the state of rest or the state of motion of a body.

Force is that external cause which can move a stationary object or which can stop a moving object.

Unbalance external force causes motion in the body.

Force applied by us on wall is action and opposite force applied by wall on us or we can say that resistance of wall to our force is reaction.

Firing of bullet is the action and recoiling of gun is the reaction.

Force applied by hammer on nail is action and normal force applied by nail on hammer is reaction to this force.

Force applied by man on ground is action and force of friction is the reaction

Weight of the book is action and normal force applied by table on book is reaction.

Acceleration due to gravity is the acceleration experienced by a body during free fall.

Yes a body falling freely near the earth surface has a constant acceleration.

Yes, in absence of gravity all freely falling body have same force acting on them.

No, the force of gravitation between two objects does not depend on the medium between them.

We will weigh more on earth surface as value of g is greater on earth surface.

Newton 1N = 9.8 kgwt.

The weight is greater at the poles than the equator.

Spring scale is used to measure the weight of a body.

Beam balance is used to measure the mass of a body.

We will weigh more on the surface of the earth.

Sir Isaac Newton stated the law of gravitation.