This is a review for a midterm I have in a couple of days. Really looking for an explanation only on the ones where calculations are needed.

1. A car goes at 120 km / h with constant speed. How far does it travel after 1.2 s?

1. 144m
2. 27.78 m
3. 10m
4. 40m
5. 14m

2. A cyclist travels evenly as he travels 800 m, having a velocity value of 16 m / s. At what time did you do this tour?

1. 12800s
2. 213.3 s
3. 50s
4. 0.02 s
5. 3.55 s

3. The equation represents x = x0+ v0t + 12 at2us:

1. La velocidad para todo tiempo/ the speed for all time
2. La posicin de un mvil/ the position of a mobile
3. La aceleracin presente/ acceleration present
4. Que existe siempre la gravedad/ that there is always gravity
5. Que est presente la friccin/ that friction is present

4. A body that moves with constant acceleration must necessarily experience change in its:

1. Velocity
2. Structure
3. Mass
4. Acceleration
5. Size

5. A certain car model changes its speed from 0 to 100 km / h in 3.2 s. What is its acceleration?

1. 96.8 m/s2
2. 320 m/s2
3. 8.68 m/s2
4. 31.25 m/s2
5. 3125 m/s2

6. An object is dropped freely. How fast is the object going at 5.3 s?

1. 137.78 m/s
2. 51.99 m/s
3. 275.56 m/s
4. 25.99 m/s
5. 9.8 m/s

7. A stone is thrown vertically upward, taking 2.5 s to reach maximum height. Calculate this height.

1. 24.53 m
2. 3.92 m
3. 2.5m
4. 25m
5. 30.625 m

8. The definition of mass in physics is:

1. The change in inertia
2. The product of mass by inertia
3. Everything that takes place
4. The volume
5. What a balance measure

9. Which object has more inertia?

1. A 5 kg object moving at 5m/s
2. a 10 kg object moving at 3 m/s
3. a 15 kg object moving at 1 m/s
4. a 10 kg object moving at 2 m/s
5. a 5kg object moving at 2m/s

10. If the gravity on the moon is 1/6 of that on Earth, the mass of an astronaut when found on it:

1. decreases 6 times
2. increases 6 times
3. halves
4. remains the same
5. doubles

11.If a force F, when there is no friction, produces an acceleration a by acting on a mass m, by tripling the mass and increasing the force 6 times, the resulting acceleration will be:

a. a

b. a/2

c. 2a

d. a/3

e. 6a.

12. Calculate the mass of a body if, upon receiving a net force of 206 N, it produces an acceleration of 8 m/s2

1. 1648kg
2. 198 kg
3. 20.99kg
4. 25.75kg
5. 252.35kg

13. In outer space, an astronaut throws a ball in front of him, so it happens to him that:

1. moves along with the ball
2. moves perpendicular to the ball
3. follows a little after the ball
4. nothing happens to him
5. moves back of the ball

14. The force of gravity that pulls on an amount of matter is referred to as:

a. Mass

b. Length

c. Volume

d. Weight

15. Kinematics is

1. Understanding why objects move

2. The description of the movement of objects

3. Action at a distance

4. None of the above

16. Dynamics is

a. Understanding why objects move

b. The description of the movement of objects

c. action at a distance

d. None of the above

17. On a planet without an atmosphere, a handkerchief and a book are dropped simultaneously from the same elevation. Which one will hit the ground first?

a. The scarf

b. The book

c. They both hit the ground at the same time

d. The answer depends on the elevation.

18. It is the length traveled by a body in a straight line from the starting point to the arrival site. It does not take into account the points of the route, but the net length.

a. Displacement

b. Trajectory

c. Movement

d. Repose

19. Which factor is ignored in solving free fall problems?

1. Inertia

2. Air resistance

3. Gravity

4. Magnetic field

20. Which of Newton's laws is known as the law of inertia?

a. Newton's First Law

b. Newton's second law

c. Newton's third law

d. The universal law of gravity

21. Newton's second law is

a. the law of inertia

b. Force is equal to the product of mass and acceleration

c. Distance divided by time

d. The law of uniform acceleration

22. An object is thrown upwards. Ignoring friction,

a. returns with the same initial speed

b. It has zero velocity at its maximum height.

c. It has constant acceleration during the trajectory

d. All of the above

23. A football is thrown on a long pass. Comparing with the initial horizontal speed, the speed at its maximum height is:

a. older

b. Less

c. Likewise

d. the same

24. If an object has a net force equal to zero, a possible state of the object is:

a. is at rest

b. acceleration is zero

c. speed is constant

d. All of the above

25. For every action force there is:

a. a net force

b. A friction force

c. an external force

d. An equal and opposite force