Lecture 3: Kinematics and Dynamics
I/ Fill in the blank using words given in the brackets. Each word can be used more than once.
Kinematics
1/ ..(1).....................are quantities that have magnitude only.
2/ Vectors are quantities that have ..(2)......................... as well as ..(3)................................
3/ ....(4).......................... vectors are vectors that lie in the same plane.
4/ ..(5).............. is the length of the path taken while ..(6).....................is the straight-line distance and
the direction from a fixed point. ...(5).. ........................is a scalar quantity and ..(6)..............is a vector
quantity.
5/ …(7)……... is the …...(8)............… travelled per unit time. Its SI unit is meter per second (ms-1).
6/ ...(9)..............................… is the rate of change of displacement.
8/ ....(10).........................is the rate of the change of velocity. Its magnitude is given by the ...
(11)...............or ..(12)............................ of a (v-t) graph.
9/ Consider a body moving with uniform or ...(13)................................. acceleration in a straight line.
10/ ...(14).................… refers to motion under the influence of a uniform gravitational field without air
resistance.
11/ ..(15).........................… refers to the resistive force acting on a body moving through air. Its.
(16).................. is always opposite to the direction of motion. Its . (17)... .......depends on the speed and
cross-section area of the body, and the density of the air.
12/ The path or the ...(18)............................ of a body, due to uniform velocity in one direction and a
uniform acceleration in a perpendicular direction, is a curve called ...(19).......................…
13/………(20)……….: A situation in which the forces acting upon an object are in balance.
(scalar, distance, acceleration, gradient, vector, trajectory, co-planar, velocity, constant, slope,
magnitude, parabola, displacement, resistance, speed, direction, free-falling).
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Fill in each of the blanks using the words given in the box.
and, some, have, who, types
Vitamins are very important for the body. There are more than thirtem (1)______types_____ of vitamins. They help the body take (2)______some_____ energy from foods, help the body grow, (3)___and____ muscles work correctly. Vitamin A is necessary for our eyes. People (4) ____who____ don't have enough vitamin A often (5) _____have_____ night blindness; that is, they can't see well when it is dark. Food such as liver, eggs, milk, and cheese have a lot of vitamin A.
1. This is the second time I have visited the Stone Forest.
2. As the storm started, we went in the direction of the old house.
3. Dzung is very keen on traveling and has been everywhere.
4. We drove away at full speed, ready to begin our adventure.
5. I find it hard to keep up with my brother on walking holidays.
6. She gave me very confusing information and I didn’t know what was going on.
1. Many of the planets in our solar system have moons.
(Nhiều hành tinh trong hệ mặt trời của chúng ta có mặt trăng.)
2. The four inner planets are quite small and have rocky surface.
(4 hành tinh ở trong nhỏ hơn và có bề mặt đá gồ ghề.)
3. The asteroid belt has millions of rocky objects.
(Vành đai của tiểu hành tinh có hàng triệu vật thể bằng đá.)
4. The outer planets are huge and mostly made up of gas.
(Những hành tinh bên ngoài lớn và chủ yêu được tạo thành từ khí.)
5. These outer planets all have thick layers of clouds and rings around them.
(Những hành tinh bên ngoài này có những lớp mây dày và những vành đai xung quanh chúng.)
Speech is one of the most important (1) __ways _____ of communicating. It consists of far more than just making noises. To talk and also to be (2) _______understood_____ by other people, we have to speak a language, that is, we have to use combinations of (3) _____sounds___ that everyone agrees stand for particular object or idea. Communication would be impossible if everyone made up their own language.
(4) ___learning_____ a language properly is very important. The basic (5) ____vocabulary______ of English is not very large, and only about 2000 words are needed to (6) ___speak_____ it quite well. But the more words you know, the more ideas you can (7) ____express____ and the more precise you can be about their exact meaning.
Words are the (8) ______main______ thing we use in communicating what we want to say. The (9) ____way_____ we say the words is also very important. Our tone of voice can express many emotions and (10) ____show____ whether we are pleased or angry, for instance.
Speech is one of the most important (1) ___way____ of communicating. It consists of far more than just making noises. To talk and also to be (2) ___understood_________ by other people, we have to speak a language, that is, we have to use combinations of (3) _____sounds___ that everyone agrees stand for particular object or idea. Communication would be impossible if everyone made up their own language.
(4) ___To learn _____ a language properly is very important. The basic (5) _____vocabulary_____ of English is not very large, and only about 2000 words are needed to (6) __speak ______ it quite well. But the more words you know, the more ideas you can (7) ____express____ and the more precise you can be about their exact meaning.
Words are the (8) ________main ____ thing we use in communicating what we want to say. The (9) _____way ____ we say the words is also very important. Our tone of voice can express many emotions and (10) ___slow____ whether we are pleased or angry, for
part 1:
1-built 2-for 3-chop 4- lose 5-Tornadoes
6-cause
1. The temple of literature was __built___ in 1070 by emperor ly nhan tong
2.Thanks ___to__ the Internet, I can communicate with my friends more easily
3. Don't __chop____ the cucumber into chunks. Slice it thinly
4. If she eats less fast food. she may __losse___ weight
5. ___Tornadoes__ can suck up anything that is in their way
6. Solar energy does not ___cause___ pollution