28/03/2020 Kinematics – Linear and Non-Linear Motion, Projectiles(Senior Class Physics Study by Topics) 28/03/2020 0Comments by Gate Academy Welcome to your Kinematics - Linear and Non-Linear Motion, Projectiles(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. An apple fruit is dropped to the ground from the top a tree 45m tall. How long does it take to reach the ground? (Take g = 10m/s²) 4.5s 3s 7.5s 6s 9s 2. When a ball rolls on a smooth level ground, the motion of its center is random translational rotational oscillatory 3. A stone and a feather are dropped from the same height above the earth surface. Ignoring air resistance, which of the following is correct? the feather will reach the ground first the stone will reach the ground first the stone and feather will both reach the ground at the same time the feather will be blown away by the wind while the stone will drop steadily 4. A body falls from rest to the ground in 0.5 secs. Calculate the height from which it falls. (g = 10m/s²) 1.25m 0.125m 1.0m 5.0m 0.5m 5. What is the acceleration between two points on a v-t graph which has coordinates(10s, 15m/s) and (20s, 35m/s) 1.00m/s² 1.75m/s² 3.50m/s² 2.00m/s² 7.00m/s² 6. A train has an initial velocity of 44m/s and an acceleration of -4m/s². Its velocity after 10 seconds is 12m/s 2m/s 16m/s 8m/s 4m/s 7. From the top of the Eiffel tower, a rubber ball and a piece of iron rod were dropped to the ground. Which of the following is true? (neglect air resistance) the rubber ball will first reach the ground under high temperature condition, the iron rod will first reach the ground the iron rod will first reach the ground both objects will reach the ground at the same time 8. A car traveling at 20m/s is brought to rest with a constant deceleration of 10m/s².Calculate the distance traveled. 400m 10m 200m 20m 9. A car moving with a speed of 90km/hr was brought uniformly to rest by the application of the brakes in 10s.How far did the car travel after the brakes were applied? 250m 25km 125m 150m 15km 10. A stone was dropped from a height, h and attained a velocity of 20m/s just before hitting the ground. If g = 10m/s², calculate the height, h through which it fell.. 100m 20m 10m 200m 11. If a car starts from rest and moves with a uniform acceleration of 10m/s² for 10s. The distance it covers in the last one second of its motion is 95m 100m 1000m 500m 905m 12. Which of the following types of motion are oscillatory?I. a diving board when used by a diverII. the motion of the balance wheel of a wrist watchIII. the motion of turn-table of a record playerIV. the motion of the center of a coin as it rolls down on an inclined planeV. the motion of a needle of a d.c ammeter into which a low a.c current is passed. I, II & III only I & II only II, III & IV only I, II & V only III, IV & V only 13. A body falls from rest to the ground in 0.5s.Calculate the height from which it falls.(g = 10m/s²) 0.5m 1.0m 1.25m 5m 0.125m 14. If a body moves with a constant speed and at the same time undergoes an acceleration, its motion is said to be rotational circular rectilinear oscillatory 15. A motor vehicle is brought to rest from a speed of 15m/s in 20s.Calculate the retardation 0.75m/s² 5.0m/s² 7.5m/s² 1.33m/s² 16. A moving object has a uniform acceleration. Its speed is directly proportional to time velocity increases by equal amounts in equal time displacement increases at a constant rate velocity varies inversely with time 17. The motion of a moving skin of a talking drum can rightly be described as transitory rotational oscillatory random translational 18. Which of the following statements is true of a body which is moving in a straight line with uniform acceleration? The velocity of the body is also uniform will increase with time in the direction of the acceleration is the product of the distance travelled and time must always be zero when the body stops accelerating is equal to the quotient of distance travelled and time 19. A car moves with an initial velocity of 25m/s and reaches a velocity of 45m/s in 10s. What is the acceleration of the car? 20m/s² 2m/s² 5m/s² 25m/s² 20. A mango fruit drops from a branch 10m above the ground. Just before hitting the ground, its velocity is 10m/s 100m/s 10√2m/s 200m/s 5√2m/s 21. If it takes an object 3s to fall freely to the ground from a certain height, what is the distance covered by the object? 30m 90m 45m 60m 22. The driver in a car of which the total mass is 800kg and which is traveling at 20m/s, suddenly observes a stationary cat in his path 50m ahead.If the car brakes exert a force of 2KN, what will most likely happen? the cat will stop 5m beyond the cat the car will stop 20m in front of the cat the car will stop 30m after hitting the cat the driver will quickly reverse the car the car will be able to stop immediately the driver notices the cat 23. A ball is thrown vertically upwards and returns to the thrower after 6s.Calculate the maximum height attained.(Take g = 10m/s²) 135m 45m 180m 150m 90m 24. Two balls X & Y weighing 5g and 50kg respectively were thrown up vertically at the same time with a velocity of 100m/s. How will their positions be one second later? X will be 500m ahead of Y Y will be 95m ahead of X X and Y will both be 500m from the point of throw X and Y are 95m from the point of throw 25. A body accelerates uniformly from rest at 2m/s². Calculate its velocity after travelling 9m. 18m/s 36m/s 6m/s 4.5m/s 4.24m/s 1 out of 25 Time is Up! Time's up