CBSE Class 11 Motion in a Straight Line — practice questions
52 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 Motion in a Straight Line in the app →Per NCERT Class 11 Physics Ch 2, what is INSTANTANEOUS VELOCITY of an object at an instant t?Per NCERT, the INSTANTANEOUS VELOCITY at a point on a position-time graph is given by which geometric quantityPer NCERT Example 2.1, an object's position is x = a + bt² with a = 8.5 m, b = 2.5 m/s². What is its velocity Per NCERT Example 2.1 (x = a + bt², b = 2.5 m/s²), what is the velocity at t = 2.0 s?Per NCERT Example 2.1, what is the AVERAGE velocity of the same object between t = 2.0 s and t = 4.0 s?Per NCERT, what is INSTANTANEOUS SPEED of an object?Per NCERT, an object has instantaneous velocities of +24 m/s and −24 m/s at two different instants. What is itPer NCERT, why is AVERAGE SPEED over a finite interval always GREATER than or EQUAL to the magnitude of AVERAGPer NCERT, what is RECTILINEAR motion?Per NCERT, in KINEMATICS, what aspect of motion is studied?Per NCERT, in motion problems we treat objects as POINT OBJECTS. When is this approximation valid?Per NCERT, what is INSTANTANEOUS SPEED equal to (in MAGNITUDE) — at a given instant?Per NCERT, average ACCELERATION over a time interval is defined as which ratio?Per NCERT, what is INSTANTANEOUS acceleration?Per NCERT, what is the SI UNIT of acceleration?Per NCERT, on a VELOCITY vs TIME graph, what does the SLOPE of the curve at a point represent?Per NCERT, on a VELOCITY vs TIME graph, what does the AREA under the curve represent?Per NCERT, GALILEO concluded from his studies of free-fall + inclined-plane motion that — which quantity is COPer NCERT, what is the shape of an x-t graph for motion with UNIFORM (constant) acceleration?Per NCERT, what is the shape of an x-t graph for motion with UNIFORM (zero acceleration) — i.e. constant velocPer NCERT, can a particle have ZERO speed at an instant but NON-ZERO acceleration at that instant?Per NCERT, can a particle with POSITIVE acceleration always be 'speeding up'?Per NCERT, the SLOPE of the velocity-time graph represents acceleration. What does a NEGATIVE slope mean?Per NCERT, can acceleration and velocity change values ABRUPTLY at an instant — in realistic situations?Per NCERT, the FIRST kinematic equation for uniformly accelerated motion (relating final + initial velocity anPer NCERT, the SECOND kinematic equation (relating displacement, initial velocity, time, and acceleration) is Per NCERT, the THIRD kinematic equation (relating final velocity, initial velocity, acceleration, and displacePer NCERT Example 2.6, the STOPPING DISTANCE of a vehicle (with initial velocity v₀ and deceleration −a) is giPer NCERT Example 2.6, doubling the INITIAL VELOCITY of a vehicle increases its stopping distance by what factPer NCERT Example 2.3, a ball thrown upward at 20 m/s from a height of 25 m (g=10 m/s², neglecting air resistaPer NCERT, if an object starts from rest (v₀ = 0) and moves with constant acceleration a, what is its displacePer NCERT, an object starting from rest with acceleration 2 m/s² travels what distance in 10 s?Per NCERT Exercise 2.5, a car at 126 km/h (= 35 m/s) brakes to stop in 200 m. What is its retardation (assumedPer NCERT Exercise 2.5, how long does the same car (initial 35 m/s, retardation 3.06 m/s²) take to stop?Per NCERT, if a body starts at v₀ and decelerates uniformly to rest covering distance d, what is the average vPer NCERT, in a kinematic problem, the THREE equations of motion are valid under what condition?Per NCERT Example 2.4, what is FREE FALL?Per NCERT, the magnitude of ACCELERATION DUE TO GRAVITY (g) near the Earth's surface is approximately what valPer NCERT, does the value of g depend on the MASS of the falling object — in free fall?Per NCERT, taking UPWARD as positive y-axis, what is the sign of acceleration during FREE FALL?Per NCERT Example 2.5, GALILEO'S LAW OF ODD NUMBERS states that distances traversed during EQUAL TIME INTERVALPer NCERT, Galileo Galilei (1564–1642) was the FIRST to make quantitative studies of free fall. What specific Per NCERT, if a ball is dropped from REST and falls for 1 s, how far has it fallen (taking g = 10 m/s²)?Per NCERT, if a ball is dropped from REST and falls for 2 s (g = 10 m/s²), what is its velocity at t = 2s?Per NCERT, if a ball is dropped from rest and falls for 2 s (g = 10 m/s²), how far has it fallen?Per NCERT Example 2.7, REACTION TIME of a person can be measured by which simple experiment?Per NCERT Example 2.7, if the ruler dropped d = 21 cm before being caught, what is the reaction time (g = 9.8 Per NCERT, a ball thrown vertically upward with initial velocity v₀ reaches maximum height h. What is h in terA jogger runs $300$ m east on the park track in $50$ s, then immediately $200$ m west in $50$ s. The average vA scooter starts from rest and accelerates uniformly at $2$ m/s$^2$. After $5$ s its speed is:A car decelerates from $20$ m/s to rest in $50$ m. Its acceleration magnitude is:A bus moves east at $40$ km/h and a car east at $60$ km/h. Velocity of car relative to bus is: