How long will it take for the particle to travel before coming to rest?
A) 16m
B) 24m
C) 40m
D) 56m
1 Answers
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A motorcar of mass 1200 kg is moving along a straight line with a uniform velocity of 90 km/h.
Mass of the motor car, m = 1200 kg Initial velocity of the motor car, u = 90 km/h = 25 m/s Final velocity of the motor car, v = 18 km/h...
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What can you say about the motion of an object if its speed-time graph is a straight line parallel to the time axis?
When the graph of a speed time graph is a straight line parallel to the time axis, the object is moving with constant speed.
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Classify the following as motion along a straight line, circular or oscillatory motion:
(i) Motion of your hands while running – Oscillatory motion. (ii) Motion of a horse pulling a cart on a straight road – Straight line motion. (iii) Motion of a child in...
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Paheli moves on a straight road from point A to point C. She takes 20 minutes to cover a certain distance AB
(c) rectilinear and periodic both.
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A person travelling on a straight line moves with a uniform velocity v_1 for some time and with uniform velocity v_2 for the next equal time.
(a) v = (v1 + v2)/2. Explanation: Let t be the time related to each velocity. Total distance travelled =v1t+v2t. Total time taken=2t. Hence average velocity = v1t+v2t/2t =(v1+v2)/2.
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A person traveling on a straight line moves with a uniform velocity v_1 for a distance x and with a uniform velocity
(c) 2/v = 1/v1 + 1/v2. Explanation: Time taken during first phase = x/v1 and during second phase = x/v2. Total distance =2x Total time taken = (x/v1)+(x/v2) = x(1/v1 +1/v2) Average velocity =Total distance/Total time taken ...
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A particle moves along the X-axis as x = u(t – 2 s)+ a(t – 2 s)^2. (a) the initial velocity of the particle is u
(c) the acceleration of the particle is 2a (d) at t = 2s particle is at the origin. Explanation: The velocity at any instant is given by v=dx/dt=u+2a(t-2) initial velocity is the...
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Consider two observers moving with respect to each other at a speed v along a straight line.
(d) acceleration of the block. Explanation: Since the observers are moving with respect to each other at a speed v, they will find the block moving at different speeds. Kinetic energy observed...
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A particle moves on a straight line with a uniform velocity. Its angular momentum (a) is always zero
(b) is zero about a point on the straight line (c) is not zero about a point away from the straight line (d) about any given point remains constant. Explanation: The angular momentum of...
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A point source of light moves in a straight line parallel to a plane table
The correct answer is (c) I∝1/r3
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