Basic Physics/Technology (SS2–1st term) Mid-term test 25/26

OBJECTIVE (10marks) Choose the correct option for each question.

1. Which of the following quantities is a vector?

2. The shortest distance between two points is known as ___.

3. A body moves 3 km east and then 4 km north. Its displacement is:

4. Which of the following best describes a scalar quantities

5. The slope of a distance-time graph gives ___.

6. When a body returns to its starting point, its displacement is ___.

7. A car moves with a uniform velocity of 20 m/s for 10 s. The displacement is ___.

8. The rate of change of displacement with time is known as ___.

9. The slope of a velocity-time graph gives the ___.

10. The total distance covered by a moving body is represented by the ___.

SUBJECTIVE (4marks)

Instructions : Show working where necessary

1. A body starts from rest and moves with uniform acceleration of 4 m/s² for 5 seconds. Its final velocity is ___.

2. A car moving with an initial velocity of 10 m/s accelerates uniformly to 30 m/s in 5 s. Find its acceleration.

3. The equation of motion is most suitable for finding displacement when time is unknown is ______.

4. The Newton 3rd law of motion states that __________________________________________.

THEORY (Answer any TWO) 3marks each

(1a) On a reference frame illustrate this positions : X(2,-3)SE and Z(-4, -4)SW (b) A boy walks 60 m north, then 80 m east. (i) Find the total distance covered. (ii) Find the magnitude of his displacement. (iii) Find the direction of displacement from the starting point.

(2a)Define motion (b)Sketch and label a velocity-time graph for: (i) Uniform acceleration (ii) Uniform velocity (iii) Uniform deceleration

3. If the displacement of a particle is this: 13m SE at 67⁰, (a) Illustrate this on a 2-dimensional reference frame (b) Find; (i) the distance from the origin due south ⬇️ (ii) the distance from that particular point on south to east ➡️.