Kinematics I : Quiz 2

 

1. What is the average speed of a car that travels 25 m in 10. s ?

0.4 m/s

4.0 m/s

2.5 m/s

250 m/s

2. What is the average speed of an object that travels 6.00 m north in 2.00 s and then travels 3.00 m east in 1.00 s ?

9.00 m/s

0.333 m/s

3.00 m/s

4.24 m/s

3. The average speed of a plane was 600 km/h. How long did it take the plane to travel 120 km ?

0.2 h

0.5 h

0.7 h

5 h

4. An object is accelerated uniformly from rest to a speed of 25 m/s in 10. s. The acceleration of the object is

1.0 m/s^2

2.0 m/s^2

1.5 m/s^2

2.5 m/s^2

5. As the time required to accelerate an object from rest to a speed of 4 m/s decreases, the acceleration of the object

decreases

increases

remains the same

6. An object originally at rest is uniformly accelerated along a straight-line path to a speed of 8.0 m/s in 2.00 s. The acceleration of the object is

0.25 m/s^2

10. m/s^2

16 m/s^2

4.0 m/s^2

7. The time-rate of change of displacement is

acceleration

distance

velocity

speed

8. A cart initially traveling at 10. m/s to the right is accelerated uniformly at 2.0 m/s^2 to the right. How long will it take for the cart's speed to be 20. m/s ?

1.0 s

10. s

50. s

5.0 s

9. As an object falls freely near the Earth, its acceleration

decreases

increases

remains the same

10. What is the speed of an object in free fall after falling for 2.0 s near the surface of the Earth ? (Disregard air resistance.)

9.8 m/s

9.8 m/s^2

19.6 m/s

19.6 m/s^2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Correct ! Return

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Incorrect..try again Return