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question_answer1) A carrom board (\[\text{4ft}\times \text{4ft}\]square) has the queen at the centre. The queen, hit by the striker moves to the front edge, rebounds and goes in the hole being the striking line. (i) What is the magnitude of displacement of the queen from the centre to the front edge? (ii) find the magnitude of the displacement of the queen from the front edge to the hole (iii) from the centre to the hole
question_answer2) A body covers first one third distance with speed 1 m/ s, the second one third distance with speed 2m/s and the last one third distance with speed 3m/s. Find its average speed.
question_answer3) A bus travelling the first one-third distance at a speed of 10 km/h, the next one fourth at 20km/h and the remaining at 40 km/h. Find the average speed of the bus.
question_answer4) 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. Find the average velocity
question_answer5) An aero plane flies round a square field PQRS of each side 100 km. Its speed along PQ is 400 km/h, along QR is 500 km/h, along RS is 600 km/h and along SP is 700 km/h. The average speed of the aero plane over the entire trip is
question_answer6) A man leaves his house for a cycle ride. He comes back to his house after half-an-hour after covering a distance of one km. What is his magnitude of average velocity for the ride?
question_answer7) A car travels equal distances in the same direction with velocities\[\text{6}0\text{ km }{{\text{h}}^{-\text{1}}},\text{ 2}0\text{ km}{{\text{h}}^{-\text{1}}}\]and\[\text{1}0\text{ km }{{\text{h}}^{-\text{1}}}\]respectively. Find the magnitude of average velocity of the car over the whole journey of motion
question_answer8) A bus covers a distance of 250 km from Delhi to Jaipur towards west in 5 hours in the morning and returns to Delhi in the evening covering the same distance of 250 km in the same time of 5 hours. Find the magnitude of average velocity of the bus for the whole journey.
question_answer9) An object undergoes an accelerations of\[\text{8m}/{{\text{s}}^{\text{2}}}\]starting from rest. Find the distance travelled in one second.
question_answer10) Moving with uniform acceleration, a body covers 150 m during 10 sec so that it covers 24 m during the tenth second. Find the initial velocity and acceleration of the body.
question_answer11) A racing car has uniform acceleration of\[\text{4m}/{{\text{s}}^{\text{2}}}\]. What distance will it cover in 10 seconds after the start?
question_answer12) A train starting from rest, attains a velocity of 72 km/ h in 5minutes. Assuming that the acceleration is uniform, find (i) the acceleration and (ii) the distance travelled by the train while it attained the velocity.
question_answer13) An object having a velocity 4.0 m/s is accelerated at the rate of\[\text{1}.\text{2m}/{{\text{s}}^{\text{2}}}\]for 5.0s. Find the distance travelled during the period of acceleration.
question_answer14) Following is the distance-time graph for a girl on a cycle ride. (i) What was the total distance covered by her? (ii) How long did she take to complete her journey? (iii) How may stops did she make?
question_answer15) The velocity of a body in four different situations is shown below. (a) (b) (c) (d) (i) Which of the above graphs represent uniform velocity? (ii) Which one represents uniform acceleration of the body from rest? (iii) Which one represents body (initially not at rest) but moving with uniform acceleration?
question_answer16) A train starting from rest, picks up a speed of\[\text{2}0\,\text{m}{{\text{s}}^{-\text{1}}}\]in 200s. It continues to move at the same rate for next 500s, and is then brought to rest in another 100s. Which of the following represents above data? (a) (b) (c) (d)
question_answer17) Diagram shows velocity - time graphs of car P and Q, starting from same place and in same direction. Which car is ahead after 10s and by how much? (a) both cars have the same distance and at the same time (b) car P is ahead by 12.5 m (c) car Q is ahead by 12.5 m (d) none of these
question_answer18) The figure above shows a velocity-time graph of two cars A and B, which start from the same place and move along a straight road in the same direction. (i) What is the acceleration of car A? (ii) What is the acceleration of car B between 2s to 4s?
question_answer19) From the velocity - time plot shown in figure, (a) what is the distance travelled by the particle during the first 40 seconds. (b) The average velocity during this period is ______
question_answer20) Figure shows the graph of the x-coordinate of a particle going along the X-axis as a function of time. What is (a) the average velocity during 0 to 10s. (b) instantaneous velocity at 5, 12s.
question_answer21) Two cars are travelling in the same direction at 60 kmph and are 30 km apart. A third car travelling at 30 kmph crosses one of the cars at a certain moment. Find the time elapsed before it crosses the second car. Solve the problem if the first two cars are travelling in the opposite directions.
question_answer22) Particles A and B are free to move along parallel paths. B is moving at a constant velocity of 10 m/s and A starts (from rest) moving at the moment B passes it. If A accelerates at \[1\,\,m/{{s}^{2}}\]for 5 s and then travels at a constant velocity, the distance between A and B 10 s after B passes A is ___. (a) 5 m (b) 62.5 m (c) 12.5 m (d) 17.5 m
question_answer23) Reaction time of a driver is the time interval between the moment the driver sights an obstacle and the moment he applies the brakes. During this time the car travels with a constant speed at which he is driving and gets nearer to the obstacle. A driver has a reaction time of 0.5 s and is travelling at 72 kmph on a straight road. What should be the minimum deceleration produced by the brakes of his car if he should avoid hitting an obstacle 50 m away from the car at the moment he sees it?
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