- A25 m
- B10 m
- C5 m
- D0 m
The person moves 10m East and 10m West, which cancel each other out horizontally. Their net displacement is the 5m North.
More Questions on Describing Motion Around Us
1Give an example of a situation where an object travels a considerable distance but its displacement is zero.
→ 2Why do objects thrown upwards eventually fall back down? Relate this to acceleration.
→ 3How would a distance-time graph differ from a velocity-time graph for an object moving with uniform speed in a straight line?
→ 4A body moves 6m towards East and then 8m towards North. If it takes 2 seconds for this motion, calculate its average velocity.
→ 5What is the nature of the velocity and acceleration in uniform circular motion?
→ 6Assertion (A): An object can have varying speed but constant velocity. Reason (R): Velocity depends on both speed and direction, so if speed varies, velocity must also vary.
→ 7A motorboat starting from rest on a lake accelerates in a straight line at a constant rate of 3.0 m/s² for 8.0 s. How far does the boat travel during this time?
→ 8Draw a rough distance-time graph for a car accelerating from rest.
→ 9Why is acceleration considered a vector quantity?
→ 10A stone is thrown upwards with an initial velocity of 40 m/s. Taking g = 10 m/s², what is the maximum height reached by the stone?
→ 11If two trains are moving in the same direction with the same speed, what is the relative velocity of one train with respect to the other?
→ 12A body's velocity changes from 10 m/s to 40 m/s in 5 seconds. What is its average acceleration?
→ 13An object moves in a straight line. Its velocity-time graph first shows a positive constant velocity, then drops to zero, and then shows a negative constant velocity of the same magnitude. Describe the object's motion.
→ 14Assertion (A): The speedometer of a car measures its instantaneous speed. Reason (R): Speedometer measures the distance covered per unit time.
→ 15What is the difference between instantaneous velocity and average velocity in uniform circular motion?
→ 16A free-falling object covers a distance of 45 m in the last second of its fall. If it started from rest, what is the total height from which it fell? (Take g = 10 m/s²)
→ 17What does a straight line with a negative slope in a velocity-time graph represent?
→ 18Give two examples of motion where the acceleration of the object is zero.
→ 19A bus starts from rest with an acceleration of 2 m/s² for 10 seconds. Then it moves with a constant velocity for 10 seconds. Finally, it decelerates at 4 m/s² to come to rest. Calculate the total distance covered.
→ 20When you are sitting in a moving train, why do trees outside appear to be moving backwards?
→ 21An object traveling at 30 m/s starts to decelerate at a rate of 3 m/s². How much time will it take to come to a complete stop?
→ 22Can the direction of acceleration be opposite to the direction of velocity? Provide an example.
→ 23A velocity-time graph for a car shows a rectangle with height 15 m/s and width 10 s. What is the displacement of the car?
→ 24Why are safety belts crucial in vehicles, especially during sudden stops or collisions? Relate this to a concept of motion.
→ 25How would a velocity-time graph look for an object undergoing increasing acceleration?
→ 26Distinguish between uniform and non-uniform motion with respect to speed and distance.
→ 27A car travels the first half of a journey at an average speed of 40 km/h and the second half at an average speed of 60 km/h. What is the average speed for the entire journey?
→ 28Assertion (A): An object undergoing free fall experiences uniform acceleration. Reason (R): The force of gravity acting on an object during free fall is constant (neglecting air resistance).
→ 29A car traveling at a high speed requires a longer braking distance. Which equation of motion best explains this phenomenon?
→ 30How does a distance-time graph for non-uniform speed appear?
→ 31Explain why a body moving with uniform speed in a circular path is said to be undergoing accelerated motion.
→ 32A car accelerates uniformly from 10 m/s to 20 m/s in 5 seconds. What distance does it cover in this time?
→ 33A stone is thrown vertically upwards and reaches a maximum height. What is its instantaneous velocity at the highest point?
→ 34If the slope of a distance-time graph is decreasing, what does it signify about the motion of the object?
→ 35Which pair of quantities consists of one scalar and one vector quantity?
→ 36A car moving at 20 m/s applies brakes and comes to rest in 10 seconds. Calculate the deceleration (retardation) of the car.
→ 37What does the area under a velocity-time graph represent?
→ 38Identify a scenario where an object experiences non-uniform velocity but uniform acceleration.
→ 39What is the significance of the slope of a velocity-time graph?
→ 40A train starting from rest accelerates uniformly and attains a speed of 36 km/h in 5 minutes. Calculate the distance traveled by the train during this period.
→ 41A car travels from point A to point B, then turns around and travels halfway back to point A. Compare the total distance covered and the magnitude of its displacement.
→ 42A velocity-time graph shows a horizontal line above the time axis. What does this indicate about the object's motion?
→ 43Assertion (A): An object can have zero velocity but non-zero acceleration. Reason (R): When an object is thrown vertically upwards, at its highest point, its velocity is zero but acceleration due to gravity is still acting on it.
→ 44An athlete runs along a circular track with a constant speed. Is the athlete's motion an example of accelerated motion? Justify your answer.
→ 45A stone is dropped from a height. If its velocity after 2 seconds is 19.6 m/s, what is the acceleration due to gravity? (Assume initial velocity is 0 m/s).
→ 46Under what condition can the magnitude of displacement be equal to the total distance covered by an object?
→ 47The distance-time graph for an object is a straight line passing through the origin. What can be inferred about the object's motion?
→ 48A bicycle starting from rest accelerates uniformly to a velocity of 18 km/h in 5 seconds. Calculate its acceleration in m/s².
→ 49A car travels at a constant speed of 60 km/h in a straight line. Which of the following statements about its motion is INCORRECT?
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