**Short Questions**

A body is moving with uniform speed. Will its velocity be uniform? |

Can a body moving at a constant speed have acceleration? |

Can a body moving with certain velocity in the direction of east can have acceleration in the direction of west? |

Can a body moving with constant velocity have acceleration? |

Can you point out some differences in circular and rotatory motion? |

Define acceleration? |

Define average velocity? |

Define Axis of rotation |

Define kinematics? |

Define Magnitude. |

Define mechanics? Write its branches |

Define Origin? |

Define the surroundings? |

Define the term position? |

Define the variable velocity? |

Define uniform acceleration? |

Define uniform speed. |

Define uniform velocity? |

Define variable acceleration. |

Define variable speed. |

Define variable velocity. |

Derive the first equation of motion for uniformly accelerated rectilinear motion. |

Describe rotatory motion with the help of examples? |

Describe the purpose of different equations of motion? |

Describe translatory motion with the help of examples? |

Describe vibratory motion with the help of examples? |

Difference between rest and motion? |

Differentiate between Circular motion and rotatory motion |

Differentiate between Distance and displacement |

Differentiate between Linear and random motion |

Differentiate between positive and negative acceleration? |

Differentiate between Rest and motion |

Differentiate between Scalers and Vectors |

Differentiate between Speed and velocity |

Differentiate Distance and displacement? |

Differentiate scalar and vector quantities. |

Does speedometer of a car measure its velocity? |

Drop an object from some height and observe its motion. Does its velocity increase, decrease or remain constant as it approaches the ground? |

Explain the motion of freely falling bodies? |

Explain translatory motion and give examples of various types of translator motion. |

Give an example of a body that is at rest and is in motion at the same time. |

How a vector is represented? |

How are vector quantities important to us in our daily life? |

How can vectors quantities can be represented graphically? |

How can we find distance from speed time graph? |

How can we use equations of motion for bodies, which are falling freely under the gravity? |

How do riders in a Ferris wheel possess Translatory motion but not circular motion? |

How you will Define the uniform speed? |

Justify the need of direction for a vector quantity. |

List the types of motion? |

Plot and interpret a distance-time graph for a body moving with constant speed? |

What are equations of motion? |

What are the points kept in mind when bodies are moving freely under gravity? |

What do you mean by the graph, variables, independent quantity and dependent quantity? |

What do you mean by the speed-time graph? |

What is LIDAR GUN? |

What is meant by positive acceleration and negative acceleration? |

What is meant by the acceleration? |

What is Position? |

What is terminal velocity? |

When a body is said to be at rest? |

When a body is thrown vertically upward, its velocity at the highest point is zero. Why? |

When does a body possess acceleration? |

Which is the fastest animal on the Earth? |

Which of the following can be obtained from the speed-time graph of a body? (i) Initial speed (ii) Final speed (iii) Distance covered in time t (iv) Acceleration of motion |

Why a body moving along a circle with uniform speed has variable velocity? |

Why vector quantities cannot be added and subtracted like scalar quantities? |

Write equations of motion for bodies moving under gravity? |

Write formulae to find area rectangle, triangle and trapezium. |

**Long Questions**

A car has a velocity of 10 ms⁻¹. It accelerates at 0.2 ms⁻² for half minute. Find the distance travelled during this time and the final velocity of the car. |

A car moves with a uniform velocity of 40 ms⁻¹ for 5 s. It comes to rest in the next 10 s with uniform deceleration. Find deceleration and total distance travelled by car. |

A cricket ball is hit vertically upwards and returns to ground 6 s later. Calculate (i) Maximum height reached by the ball (ii) initial velocity of the ball |

A tennis ball is hit vertically upward with a velocity of 30 ms⁻¹, it takes 3 s to reach the highest point. Calculate the maximum height reached by the ball. How long it will take to return to the ground? |

A train moves with a uniform velocity of 36 kmh⁻¹ for 10 s. Find the distance travelled by it. |

A train starting from rest, accelerates uniformly and attains a velocity of 48 kmh⁻¹ in 2 minutes. It travels at this speed for 5 minutes. Finally, it moves with uniform retardation and is stopped after 3 minutes. Find the total distance travelled by train. |

A train starts from rest. It moves through 1 km in 100 s with uniform acceleration. What will be its speed at the end of 100 s.? |

Define the terms Speed, velocity and acceleration with examples |

Define Translatory motion and its types. |

Derive equations of motion for uniformly accelerated rectilinear motion. |

Derive first equation of motion using speed time graph. |

Derive second equation of motion using speed-time graph. |

Derive the equation of motion which is independent of distance S. |

Derive the equation of motion which is independent of t. |

Derive the second equation of motion for uniformly accelerated rectilinear motion. |

Derive the second equation of motion? |

Derive the third equation of motion for uniformly accelerated rectilinear motion. |

Derive the third equation of motion? |

Derive third equation of motion using speed-time graph. |

Describe the different types of translatory motion? |

Explain Distance — time Graph. |

Explain Speed — Time Graph. |

Prove that vf = vi + at. |

Prove that 2aS = vf² – vi² |

Prove that S = Vit + ½ at² |

Sketch a distance-time graph for a body at rest. How will you determine the speed of a body from this graph? |

Sketch a distance-time graph for a body moving with variable speed? |

Sketch a speed-time graph for a body moving with uniformly changing speed? |

Sketch a speed-time graph for distance travel by a moving object? |

Sketch a velocity-time graph for the motion of the body. From the graph explaining each step, calculate total distance covered by the body. |

When brakes are applied, the speed of a train decreases from 96 kmh⁻¹ to 48 kmh⁻¹ in 800 m. How much further will the train move before coming to rest? (Assuming the retardation to be constant). Find the time taken by the train to stop after the application of brakes. |

Post Views: 11