UNIT TEST PHYSICS

1. The ratio of velocity to speed of an object is......

• one
• greater than one
• less than one
• either less than one or equal to one

2. The position -time graph of an object in uniform motion is.........

• a straight line parallel to time axis
• a straight line parallel to the position axis
• a straight line passing to the origin
• a parabola

3. Which is the stopping distance formula?

• v= u+at
• v²=u²+2as

• S=ut+1/2at²

• none of these

4. Can a body have zero velocity and non-zero accelaration?

• yes
• no
• none of these

5. Area under the velocity time graph gives........

• total velocity
• accelaration
• total displacement coverd by the body
• none of these

6. Free fall of an object in vaccum is with

• uniform speed
• uniform velocity
• variable accelaration
• uniform accelaration

7. if the speed of a car is doubled, then with the same breaking effect we can stop the car within a distance ..............the original distance

• 2 times
• 4 times
• 8 times
• 10 times

8. Out of the following, which cannot be negative?

• Path length
• Displscement
• Velocity
• accelaration

9. the speedometer in a vehicle measures.....

• average speed
• instantaneous speed
• accelaration
• average velocity

10. A particle covers a circle of radius r.The dispacement of the particle is.....

• r
• 2r
• 0
• 2πr