Tag: force and newton's laws of motion

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Questions Related to force and newton's laws of motion

Multiple choice physics force and newton's laws of motion inertia and mass concept of inertia galileo's law and inertia

A tennis ball and a cricket ball, both are stationary. To start motion in them

  1. a less force is required for the cricket ball than for the tennis ball

  2. a less force is required for the tennis ball than for the cricket ball

  3. same force is required for both the balls

  4. nothing can be said
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

According to Newton's laws of motion, an object with more mass requires more force to change the current state. Since, a cricket ball is heavier than a tennis ball, therefore, less force is required to start motion in tennis ball than in cricket ball.

Multiple choice physics force and newton's laws of motion inertia and mass concept of inertia galileo's law and inertia

The tendency of a body to resist acceleration is called:

  1. Force

  2. Retardation

  3. Inertia

  4. mass
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Inertia is the resistance of any physical object to any change in its state of motion, including changes to its speed and direction. It is the tendency of objects to keep moving in a straight line at constant velocity.

Multiple choice physics force and newton's laws of motion inertia and mass concept of inertia galileo's law and inertia

The mass of an object is a $\underline{                     }$ measure of inertia:

  1. quantitative

  2. qualitative

  3. absolute

  4. average
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The tendency of an object to resist changes in its state of motion varies with mass. Mass is that quantity that is solely dependent upon the inertia of an object. The more inertia that an object has, the more mass that it has. A more massive object has a greater tendency to resist changes in its state of motion.

Multiple choice physics force and newton's laws of motion inertia and mass concept of inertia galileo's law and inertia

State whether given statement is True or False.
An object experiences a net zero external unbalanced force. Is it possible for the object to be travelling with a non-zero velocity?

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Yes, when external unbalanced force on an object is zero, the object can travel with a non-zero velocity. Such a motion will be a uniform motion. The conditions for this are:
(i) Magnitude of velocity must be constant.
(ii) Direction of velocity must be constant i.e., it travels in a straight line without change in direction.

Multiple choice physics force and newton's laws of motion inertia and mass concept of inertia galileo's law and inertia

The inertia of a moving body makes it:

  1. stop due to friction

  2. increase its speed

  3. decrease its speed

  4. resist a change in its state of motion
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Inertia is a physical property that offers resistance to change in the state of motion of an object i.e an object tends to remain in its initial state of motion when no external force is applied to it.