Physics Question

Chapter 3 – Translational MotionTop of Form


Question 1

The average speed of a horse that gallops 10 kilometers in 30 minutes is

1. 15 km/h.

2. 30 km/h.

3. 40 km/h.

4. 20 km/h.

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Question 2

If a car increases its velocity from zero to 60 m/s in 10 seconds, its acceleration is

1. 3 m/s2.

2. 60 m/s2.

3. 600 m/s2.

4. 6 m/s2Bottom of Form


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Question 3

A mosquito flying at 3 m/s that encounters a breeze blowing at 3 m/s in the opposite direction has a speed of

a4 m/s.

b0 m/ms

c. 6 m/s.

3 m/s.Bottom of Form


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Question 4

A mosquito flying at 3 m/s that encounters a breeze blowing at 3 m/s in the same direction has a speed of

1. 4 m/s.

2. 0 m/s.

3. 3 m/s.

4. 6 m/s


Top of FormQuestion 5


You cannot exert a force on a wall

5. unless you put your mind to it.

6. if the wall resists.

7. Bottom of Formunless the wall simultaneously exerts the same amount of force on you.


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Question 6

When you walk at an average speed of 4 m/s, in 5 s you’ll cover a distance of

8. 15 m.

9. 2 m.

10. 10 m.Bottom of Form

11. 20 m.

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Question 7

A car’s speed 3 seconds after accelerating from rest at 2 m/s2 is

12. 2 m/s.

13. 4 m/s.

14. 3 m/s.

15. 6 m/s.Bottom of Form

Question 8

Explain the difference between rotational and translational motion.


Question 9

During vertical jump (no running), which are the forces acting on the jumper, and their directions?

What is the net force (include the direction of the net force)?

If the Weigh of the jumper is greater than the force exerted on the feet of the jumper, can be the jump be executed?


Question 10

When the body of a jumper leave the ground, what is the only force acting on the jumper?


Question 11

During running High Jump, the jumper use the Kinetic Energy of the run to pass over the bar. What conversion of energy occur during the jump (KE to ?)?


Question 12

During standing broad jump, to reach the maximum range, the jumper needs a Resultant Force with angle of 45 degrees (respect the ground). Which are the forces on the jumper, that are the origin of that resultant force?

Can the jumper change the direction or magnitude of his weigh?


Question 13

During standing broad jump, a jumper with mass 67 kg, exerts a force, with his feet, of 1.8 times his weight at an angle of 70 degrees respect the horizontal. Find the magnitude and direction of the Resultant force Fr?


Question 14

Read the paper:

Write with less than 500 words a summary of this articles, including: Common injuries and prevention.


Question 15

Find the air resistance acting on a parachuter that jumps from a plane. The mass of the parachuter is 85 kg, the coefficient of shape is 0.88 kg/m^3, and the velocity is 25 m/s. The area facing the direction of the motion is 0.30m^2.

Compare the magnitudes of the air resistance and the weight of the parachuter. What is the magnitude and direction of the net force?







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