Unit Test : Motion

Time: 1 hour
M.M.: 30
Attempt all questions.
Question numbers 1 to 5 carry 1 mark each. 
Question numbers 6 to 8 carry 2 marks each.
Question numbers 9 to 11 carry 3 marks each. 
Question numbers 12 & 13 carry 5 marks each.

Q1: An object travels 16 meters in 4 seconds and then another 16 meters in 2 seconds. What is the average speed of the object? (1 Mark)
(i) 4 m/s
(ii) 5.33 m/s
(iii) 6 m/s
(iv) 8 m/s

Q2: What does the slope of a distance-time graph represent? (1 Mark)
(i) Speed
(ii) Acceleration
(iii) Displacement
(iv) Velocity

Q3: If a car travels 50 km in the first hour and 70 km in the next two hours, what is its average speed? (1 Mark)
(i) 40 km/h
(ii) 60 km/h
(iii) 50 km/h
(iv) 30 km/h

Q4: Which of the following graphs represents an object at rest? (1 Mark)

Q5: The area under a velocity-time graph represents which of the following quantities? (1 Mark)
(i) Speed
(ii) Acceleration
(iii) Distance travelled
(iv) Time taken

Q6: A car accelerates from rest at a constant rate of 3 m/s² for 8 seconds. What is the final velocity and the distance travelled by the car? (2 Marks)

Q7: Differentiate between Distance and Displacement motion using examples. (2 Marks)

Q8: Explain the concept of uniform circular motion. Derive the formula for the speed of an object in circular motion and give examples. (2 Marks)

Q9: Write the three equations of motion and explain their significance with examples. (3 Marks)

Q10: Plot a distance-time graph for an object moving with uniform speed and another for an object moving with non-uniform speed. Explain the difference. (3 Marks)

Q11: A train starting from rest attains a velocity of 72 km/h in 5 minutes. Calculate its acceleration and the distance covered in this time. (3 Marks)

Q12: A big truck moving along a straight line at a speed of 54km/hr stop in 5s after the breaks are applied.
a. Find the acceleration, assuming it to constant.
b. Plot the graph of speed versus time.
c. Using the graph. Find the distance covered by the car after the brakes are applied? (5 Marks)

Q13. A car is moving on a straight road with uniform acceleration. The following table gives the speed of the car at various instants of time :
The acceleration of car is: (5 Marks)

You can find the solutions of this Unit Test here: ​Unit Test (Solution) : Motion​​​