ACME ACADEMY

WEEKLY EVALUATION TEST

Subject: Science
Time Limit: 20 Mins
Max Marks: 20 Marks
Student Name:
Roll Number:
Class / Sec:
Date:

GENERAL INSTRUCTIONS:

  1. All questions are compulsory. Carefully read all instructions before starting.
  2. The question paper contains 20 questions.
  3. There is no negative marking for incorrect answers.
  4. Use of mobile phones, smartwatches, or calculators is strictly prohibited during the exam.
1. Which of the following is defined as the shortest distance measured from the initial to the final position of an object?
[1 Mark]
(A) Total path length
(B) Displacement
(C) Average speed
(D) Uniform motion
2. What is the SI unit of acceleration?
[1 Mark]
(A) m/s
(B) m/s²
(C) km/h
(D) m²/s
3. A body is said to be in uniform motion if it travels:
[1 Mark]
(A) Unequal distances in equal intervals of time.
(B) Equal distances in unequal intervals of time.
(C) Equal distances in equal intervals of time.
(D) Along a circular path at varying speeds.
4. An object travels 16 m in 4 s and then another 16 m in 2 s. What is the average speed of the object?
[1 Mark]
(A) 5.33 m/s
(B) 4 m/s
(C) 8 m/s
(D) 6 m/s
5. Which of the following conditions is true for an object moving in a straight line that comes to a halt?
[1 Mark]
(A) Its initial velocity is zero.
(B) Its final velocity is zero.
(C) Its acceleration is positive.
(D) Its displacement is zero.
6. A student draws a distance-time graph for an object. If the graph is a straight line parallel to the time axis, what does this indicate about the object?
[1 Mark]
(A) It is in uniform motion.
(B) It is accelerating.
(C) It is stationary (at rest).
(D) It is moving with uniform velocity.
7. In a velocity-time graph, what physical quantity does the area enclosed by the velocity-time curve and the time axis represent?
[1 Mark]
(A) Acceleration
(B) Displacement (Magnitude)
(C) Average speed
(D) Rate of change of velocity
8. Which of the following equations correctly represents the position-time relation for an object moving with uniform acceleration?
[1 Mark]
(A) v = u + at
(B) s = ut + ½ at²
(C) 2as = v² - u²
(D) v² = u² + at
9. A car accelerates uniformly from 18 km/h to 36 km/h in 5 seconds. What is the acceleration of the car in m/s²?
[1 Mark]
(A) 1 m/s²
(B) 2 m/s²
(C) 3.6 m/s²
(D) 5 m/s²
10. An athlete completes one round of a circular track of diameter 200 m in 40 s. What will be the magnitude of displacement at the end of 2 minutes 20 seconds?
[1 Mark]
(A) 2200 m
(B) 200 m
(C) 0 m
(D) 400 m
11. Why is the motion of an object in a circular path at a constant speed considered to be an accelerated motion?
[1 Mark]
(A) Because its speed continuously increases.
(B) Because the direction of its velocity changes continuously.
(C) Because it covers unequal distances in equal times.
(D) Because its mass changes during the motion.
12. If the displacement of an object is proportional to the square of time, then the object moves with:
[1 Mark]
(A) Uniform velocity
(B) Uniform acceleration
(C) Increasing acceleration
(D) Decreasing acceleration
13. Assertion (A): The displacement of a moving object can be zero, but the distance covered cannot be zero. Reason (R): Displacement is the shortest distance between initial and final positions, while distance is the total path length covered.
[1 Mark]
(A) Both A and R are true, and R is the correct explanation of A.
(B) Both A and R are true, but R is not the correct explanation of A.
(C) A is true, but R is false.
(D) A is false, but R is true.
14. A train starting from rest attains a velocity of 72 km/h in 5 minutes. Assuming uniform acceleration, what is the distance travelled by the train while it attains this velocity?
[1 Mark]
(A) 3 km
(B) 2 km
(C) 1 km
(D) 5 km
15. Odometer is a device fitted in automobiles to measure:
[1 Mark]
(A) Instantaneous speed
(B) Average velocity
(C) Total distance travelled
(D) Rate of acceleration
16. A ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of 10 m/s², with what velocity will it strike the ground?
[1 Mark]
(A) 10 m/s
(B) 20 m/s
(C) 40 m/s
(D) 400 m/s
17. Which of the following situations is possible?
[1 Mark]
(A) An object moving with a constant velocity but variable speed.
(B) An object moving with a constant acceleration but with zero velocity.
(C) An object covering a straight path where displacement magnitude is greater than distance.
(D) An object in uniform circular motion having zero acceleration.
18. Two objects A and B are moving. Object A covers 10 m every second constantly. Object B covers 2 m in the first second, 4 m in the second, and 6 m in the third. How would you classify their motions?
[1 Mark]
(A) A is uniformly accelerating; B is in uniform motion.
(B) A is in uniform motion; B is in non-uniform motion.
(C) Both are in uniform motion.
(D) Both are in non-uniform motion.
19. A satellite revolves around the Earth in a circular orbit of radius 42250 km. If it takes 24 hours to revolve around the Earth, what is its approximate speed?
[1 Mark]
(A) 1.12 km/s
(B) 3.07 km/s
(C) 5.15 km/s
(D) 9.8 km/s
20. When you throw a stone vertically upwards, its velocity continuously decreases until it reaches the highest point. What is the direction of acceleration during its upward journey?
[1 Mark]
(A) Upwards
(B) Downwards
(C) Zero
(D) Horizontal
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