Time Left:
600
sec
1. The rate of change of velocity of an object is called
A. Speed
B. Displacement
C. Acceleration
D. Force
2. The SI unit of acceleration is
A. m/s
B. m/s²
C. km/h²
D. m²/s
3. If the velocity of an object increases with time, the acceleration is
A. Zero
B. Negative
C. Positive
D. Constantly zero
4. When the velocity of an object decreases with time, the acceleration is
A. Positive
B. Negative
C. Uniform
D. Zero
5. The formula for acceleration is
A. a = t/v
B. a = v – u
C. a = (v – u)/t
D. a = s/t
6. If a body moves with uniform velocity, then its acceleration is
A. Increasing
B. Decreasing
C. Constant and zero
D. Infinite
7. An object can have uniform acceleration if
A. Velocity increases by equal amounts in equal time
B. Velocity increases irregularly
C. Speed is zero
D. Time is constant
8. The motion of a freely falling body is an example of
A. Uniform motion
B. Uniform acceleration
C. Non-uniform acceleration
D. Rotational motion
9. The motion of a car increasing its speed by unequal amounts in equal time intervals is called
A. Uniform acceleration
B. Retardation
C. Non-uniform acceleration
D. Zero acceleration
11. If a moving object slows down, its acceleration is
A. Positive
B. Negative
C. Constant
D. Zero
13. If an object’s velocity changes at a uniform rate, its acceleration is
A. Zero
B. Non-uniform
C. Uniform
D. Variable
14. Which of the following has non-uniform acceleration?
A. Freely falling object
B. Object moving on curved path with changing speed
C. Stone thrown vertically upward
D. Body moving at constant speed
15. Acceleration is said to be negative when
A. Speed increases
B. Velocity decreases
C. Direction changes
D. Body is at rest
17. Acceleration can be produced by
A. Changing speed only
B. Changing direction only
C. Changing both speed and direction
D. All of these
18. The physical quantity that measures how quickly velocity changes is
A. Speed
B. Distance
C. Displacement
D. Acceleration
19. The motion of a car starting from rest and speeding up is an example of
A. Uniform motion
B. Uniform acceleration
C. Constant velocity
D. Zero acceleration
20. When an object moves with non-uniform acceleration, its velocity-time graph
A. Is a straight line
B. Is parallel to time axis
C. Has any irregular shape
D. Is horizontal
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