Equations of Motion by Graphical Method

IMPORTANT

Equations of Motion by Graphical Method: Overview

This topic covers concepts, such as Kinematic Equations of Motion, Displacement Travelled in Nth Second & Average Velocity for Uniformly Accelerated Motion etc.

Important Questions on Equations of Motion by Graphical Method

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The initial velocity of a particle is 10 m/s. It is moving with an acceleration of 4 m/s2. The distance covered by the particle after 2 s is

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Two bodies of masses ma, mbma> mb are dropped from heights a, b respectively. The ratio of velocities with which they reach ground is:

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A bus of mass 2800 kg is travelling at a speed of 90 kmh. A retarding force of 5600 N is applied on it for a distance of 100 m. Its velocity reduces to

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A stone is dropped into a well having free water surface at depth 44.1 m. The splash is heard 3.13 sec after the stone is dropped. Find the velocity of sound in air (Take g= 9.8 ms2)

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A body is travelling with speed 20 m s-1 having acceleration 4 m s-2 the speed of the body after 2 s is

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A body is dropped from rest. Its velocity varies with displacement covered as: 

HARD
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Three particles A, B and C are thrown from top of a building with same speed. A is thrown upwards, B is thrown downwards and C is thrown horizontally, they hit the ground with speed VA, VB and VC respectively then

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Two steel balls of mass 1 kg and 2 kg and a lead ball of 10 kg are released together from the top of tower 30 m high. Assuming the path to be in vacuum:

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The velocity – time graph of a moving body is shown in the figure. Which of the following statements is true?

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Which of the following is an equation for position - Time relation?

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A particle starts from origin O from rest and moves with an uniform acceleration along the positive x-axis. Identify all figures that correctly represent the motion qualitatively.

 

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A body traveling along a straight line with a uniform acceleration has velocities 5 m/s at a point A and 15 m/s at a point B respectively. If M is the midpoint of AB, then

(i) The ratio of times taken by the body to cover distances MB and AM is 5-12.
(ii) The velocity at M is 55 m/s.
(iii) The average velocity over AM is 55+12m/s.
(iv) The product of the acceleration and the distance AB is 100m2/s2.
Which of above statements are true?

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A lift is going up. The variation in the speed of the lift is as given in the graph. What is the height to which the lift takes the passengers?
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A stone is thrown vertically upward with a speed of u metres per second. A second stone is thrown vertically upward from the same point with the same initial speed but T seconds later than the first one. They collide at a distance of ku2-g2T2K,g? metres above the point of K,K.projection. Then = ? 

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A truck starts from rest and rolls down a hill with constant acceleration. It travels a distance of 400m in the 20s. Find its acceleration. Find the force acting on it if its mass is 7 metric tons.

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Study the following position—time graph of P, Q and R vehicles and compare their magnitude of displacements.

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If a body is released from the top of a tower, the graph between distance (x) and time (t) is correctly shown by

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Which of the following cannot be the speed (v)-time (t) graph?

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If A and B starts from rest simultaneous with accelerations as mentioned in diagram.

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Find how far from P, B overtakes A.

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A stone is projected vertically upward with a speed of 15 ms-1 and one second later a second stone is projected vertically upward from the same point with the same speed. Find where the two stones meet.