Engineering Physics I Mock Test 1

10%

Question 1 of 10

1. A cyclist moves along a circular path of radius 70m. If he completes one round in 11s, calculate the total length of a path.

440m

11m

40m

Question 1 of 10

Question 2 of 10

2. For motion in two or three dimensions, what is the angle between velocity and acceleration vectors?

180°

0°

Between 0° and 180°

90°

Question 2 of 10

Question 3 of 10

3. Under what condition is the average velocity equal to the instantaneous velocity?

Constant velocity

Constant speed

Varying speed

Varying velocity

Question 3 of 10

Question 4 of 10

4. A batsman hits back a ball straight in the direction of the bowler without changing its initial speed of 12m/s. If the mass of the ball is 0.15kg, determine the impulse imparted to the ball. (Assume linear motion of the ball)

-45Ns

-3.6Ns

60Ns

3.78Ns

Question 4 of 10

Question 5 of 10

5. Which of the following has zero magnitude?

Modulus of a vector

Fixed vector

Unit vector

Zero vector

Question 5 of 10

Question 6 of 10

6. Calculate the angular speed of flywheel making 420 revolutions per minute.

44 rad/sec

10/4200 rad/sec

42300 rad/sec

1200 rad/sec

Question 6 of 10

Question 7 of 10

7. How is friction due to air reduced?

By using ball bearings

Lubrication

Streamlining

By polishing

Question 7 of 10

Question 8 of 10

8. A body is projected horizontally from the top of a cliff with a velocity of 9.8m/s. What time elapses before horizontal and vertical velocities become equal? Take g = 9.8m/s²

10s

9.8s

Question 8 of 10

Question 9 of 10

9. Walking off a man is an example of ____________

Multiplication of vectors

Addition of vectors

Resolution of forces

Subtraction of vectors

Question 9 of 10

Question 10 of 10

10. Fuel is consumes at the rate of 100kg/s in a rocket. The exhaust gases are ejected at speed of 4.5×10⁴m/s. What is the thrust experienced by the rocket?

3.19×10⁶N

4.5×10⁶N

4.5N

3.19N

Question 10 of 10