Lecture 3: Kinematics and DynamicsI/ Fill in the blank using words given in the brackets. Each word can be used more tha... - Hoc24

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Lãnh Hàn Thiên Minz

Lãnh Hàn Thiên Minz

15 tháng 5 2021 lúc 20:01

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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Use the words given to fill in the blanks. There is one extra word that you do not need to use.down – air – quickly – about – save - dirty – important – pollute – growWe all are destroying the Earth. The seas and rivers are too (1).......................... to swim in. There is so much smoke in the (2) ................................ that it is unhealthy to live in many of the worlds cities. In one well-known city, for example, poisonous gases from car (3) ............................. the air...

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