NEW
Font size
Worksheets9th class NLM
Total questions: 12
Worksheet time: 6mins
What is the full form of NLM?
National Library of Medicine
Nuclear Launch Mechanism
National Language Movement
New Life Ministries
State Newton's first law of motion.
An object in motion will change direction on its own
An object in motion will eventually come to a stop
An object at rest will start moving on its own
An object at rest will stay at rest, and an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
Define Inertia.
Force applied to an object
Speed of an object
Resistance to change in motion
Ability to move freely
Explain the term 'momentum'.
Momentum is the force exerted by an object in motion
Momentum is the same as inertia
Momentum is the energy stored in an object
Momentum is the product of an object's mass and its velocity.
What is the SI unit of force?
Newton (N)
Second (s)
Kilogram (kg)
Meter (m)
What is the relationship between force and acceleration?
Force and acceleration are inversely proportional
Acceleration causes force
Force and acceleration are directly proportional
Force has no effect on acceleration
Explain the concept of balanced and unbalanced forces.
Balanced forces are equal in size and opposite in direction, resulting in no change in motion. Unbalanced forces are unequal in size and/or direction, resulting in a change in motion.
Balanced forces are equal in size and direction, resulting in a change in motion. Unbalanced forces are also equal in size and direction, resulting in no change in motion.
Balanced forces are unequal in size and direction, resulting in a change in motion. Unbalanced forces are equal in size and opposite in direction, resulting in no change in motion.
Balanced forces are unequal in size and opposite in direction, resulting in a change in motion. Unbalanced forces are equal in size and direction, resulting in no change in motion.
State the conditions for an object to be in equilibrium.
The object must be moving at a constant speed.
Net force and net torque acting on the object must be zero.
Net force and net torque acting on the object must be non-zero.
The object must be accelerating in a straight line.
What is the difference between mass and weight?
Mass is the force exerted on an object due to gravity, while weight is the amount of matter in an object
Mass is the same as weight
Mass and weight are interchangeable terms
Mass is the amount of matter in an object, while weight is the force exerted on an object due to gravity.
Explain the concept of friction and its types.
Friction is the force that opposes the relative motion or tendency of such motion of two surfaces in contact. There are mainly four types of friction: static friction, kinetic friction, rolling friction, and fluid friction.
Friction is the force that attracts two surfaces towards each other
There are mainly three types of friction: static friction, kinetic friction, and rolling friction
Friction is the force that helps in the relative motion of two surfaces
The up thrust and weight act in
same direction
opposite direction
both a & b
none of these
The up thrust and weight act in
same direction
opposite direction
both a & b
none of these
