Solved Questions on Motion
1. Charles wants to conduct an experiment to study oscillatory motion. Which of the following setups would be suitable?
a) Observing the motion of a ball rolling down a slope
b) Measuring the distance covered by a bicycle on a straight road
c) Investigating the swinging motion of a pendulum
d) Analysing the rotational motion of a spinning top
Answer: c) A pendulum exhibits oscillatory motion as it swings back and forth. By observing and analysing the swinging motion of a pendulum the characteristics of oscillatory motion can be studied.
2. Which of the following is an example of non-uniform circular motion?
a) A spinning top slowing down gradually
b) A planet orbiting around the Sun
c) A car moving on a circular track at a constant speed
d) A pendulum swinging back and forth
Answer: a) Non-uniform circular motion refers to a motion where the speed of the object changes over time. In the case of a spinning top, as it slows down gradually, its speed decreases, indicating a non-uniform circular motion.
3. Objects can exhibit multiple types of motion simultaneously. Which of the following examples illustrates this phenomenon?
a) A car moving in a straight line at a constant speed.
b) Clothes spinning in a washing machine
c) The hands of a clock ticking
d) A fan rotating
Answer: a) A car moving in a straight line at a constant speed exhibits both translatory motion (straight line movement) and rotational motion (the wheels rotating). Therefore, it is an example of an object exhibiting multiple types of motion simultaneously.
4. A stretched rubber band is plucked and left to quiver. What type of motion is observed?
a) Revolutionary motion
b) Translatory motion
c) Curvilinear motion
d) Vibratory motion
Answer: d) When a stretched rubber band is plucked and left to quiver, it undergoes back-and-forth motion. This motion is known as vibratory motion, characterised by oscillations or vibrations.
5. Match the following types of motion with their corresponding examples.
a) 1:C, 2:B, 3:D, 4:A
b) 1:B, 2:C, 3:D, 4:A
c) 1:A, 2:C, 3:B, 4:D
d) 1:C, 2:D, 3:B, 4:A
Answer: b) Rectilinear motion: Earth rotating on its axis
Curvilinear motion: Train moving on a straight railway track
Oscillatory motion: Car moving on a curved path
Rotational motion: Child on a swing moving back and forth
FAQs
1. What is motion, and why is it an essential concept in science?
Motion is the gradual shift in an object's location over time. Science depends on our ability to understand motion because it explains how objects move and interact in our environment.
2. What are the different types of motion?
Motion can be divided into two basic categories: curvilinear motion (moving along a curved path) and rectilinear motion (moving in a straight line).
3. How do we measure motion, and what are the units used?
Meters per second (m/s) is a unit of measurement for speed in motion, and meters per second squared (m/s2) for acceleration. These measures help in determining how quickly or slowly objects move.
4. What is speed, and how is it different from velocity?
Speed measures how fast an object is moving without considering direction, while velocity includes both speed and direction. Speed is a scalar quantity, and velocity is a vector quantity.
5. What is acceleration, and why is it important in motion?
Acceleration is the rate of change of velocity. It's important because it explains how quickly an object's speed or direction changes over time.
