CBSE Class 11 (Science) Motion in a Straight Line — practice questions
78 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 (Science) Motion in a Straight Line in the app →As per your syllabus, an object's position is x = a + bt² with a = 8.5 m, b = 2.5 m/s². What is its velocity aAs per your syllabus, what is the velocity at t = 2.0 s?As per your syllabus, what is the AVERAGE velocity of the same object between t = 2.0 s and t = 4.0 s?As per your syllabus, what is RECTILINEAR motion?As per your syllabus, what is INSTANTANEOUS SPEED equal to (in MAGNITUDE) — at a given instant?As per your syllabus, what is INSTANTANEOUS acceleration?As per your syllabus, what is the SI UNIT of acceleration?As per your syllabus, what is the shape of an x-t graph for motion with UNIFORM (constant) acceleration?As per your syllabus, the FIRST kinematic equation for uniformly accelerated motion (relating final + initial As per your syllabus, the SECOND kinematic equation (relating displacement, initial velocity, time, and acceleAs per your syllabus, the THIRD kinematic equation (relating final velocity, initial velocity, acceleration, aAs per your syllabus, doubling the INITIAL VELOCITY of a vehicle increases its stopping distance by what factoAs per your syllabus, a ball thrown upward at 20 m/s from a height of 25 m (g=10 m/s², neglecting air resistanAs per your syllabus, if an object starts from rest (v₀ = 0) and moves with constant acceleration a, what is iAs per your syllabus, an object starting from rest with acceleration 2 m/s² travels what distance in 10 s?As per your syllabus, a car at 126 km/h (= 35 m/s) brakes to stop in 200 m. What is its retardation (assumed uAs per your syllabus, how long does the same car (initial 35 m/s, retardation 3.06 m/s²) take to stop?As per your syllabus, in a kinematic problem, the THREE equations of motion are valid under what condition?As per your syllabus, the magnitude of ACCELERATION DUE TO GRAVITY (g) near the Earth's surface is approximateAs per your syllabus, if a ball is dropped from REST and falls for 1 s, how far has it fallen (taking g = 10 mAs per your syllabus, if a ball is dropped from REST and falls for 2 s (g = 10 m/s²), what is its velocity at As per your syllabus, if a ball is dropped from rest and falls for 2 s (g = 10 m/s²), how far has it fallen?As per your syllabus, if the ruler dropped d = 21 cm before being caught, what is the reaction time (g = 9.8 mMotion of an object along a straight line is also called what?Which branch of mechanics describes motion without asking what causes it?When can a moving object be treated as a point object?A velocity of -24.0 m/s has what speed?Acceleration is the rate of change of velocity with respect to which quantity?The acceleration at an instant is the slope of the tangent to which curve?The area under a velocity-time curve between two instants gives the object's what?For uniform acceleration, the position-time plot has which shape?For uniform motion, the velocity-time plot is a straight line that isWhich equation connects final velocity, initial velocity, acceleration and time?Which equation relates v, v0, a and displacement x without time?A car starts from rest with a = 2 m/s^2. How far does it go in 5 s?A body moving at 10 m/s decelerates at 2 m/s^2. After how long does it stop?A scooter at 20 m/s brakes with deceleration 5 m/s^2. Find its stopping distance.How does stopping distance change if the initial velocity doubles, with the same deceleration?Stopping distance of a vehicle is proportional to which quantity?If air resistance is neglected, an object falling near the Earth's surface is said to be in what?What value of g is taken as constant for small falls near Earth's surface in this chapter?Free fall near the ground is a case of what kind of motion?A stone is dropped from rest. Taking g = 10 m/s^2, what is its speed after 3 s?A stone dropped from rest falls for 3 s with g = 10 m/s^2. How far does it fall?A ball is dropped from a height of 80 m. With g = 10 m/s^2, how long does it take to land?Distances covered in successive equal time intervals by a body falling from rest are in what ratio?Who first made quantitative studies of free fall and gave the law of odd numbers?A ball thrown straight up at 20 m/s rises how high? Take g = 10 m/s^2.A ball is thrown up at 20 m/s with g = 10 m/s^2. How long does it take to reach its highest point?A ball thrown up at 20 m/s returns to the thrower's hand after how long? Take g = 10 m/s^2.A particle thrown upward is momentarily at rest at the top. Its acceleration there isDoes zero velocity at an instant necessarily mean zero acceleration at that instant?A particle is speeding up. Acceleration then pointsTaking upward as positive, the acceleration of a falling stone isThe sign of an acceleration depends mainly on what?A position is given by x = 3t^2 (x in m, t in s). What is the velocity at t = 2 s?If x = 4t + t^2 (SI units), what is the velocity at t = 3 s?For x = 5t^3, the acceleration at t = 1 s isA body has x = 8.5 + 2.5t^2 (SI). What is its velocity at t = 2.0 s?For x = 8.5 + 2.5t^2 (SI), what is the average velocity between t = 2 s and t = 4 s?A car goes from 0 to 30 m/s in 6 s at constant acceleration. Find the acceleration.A body starting from rest reaches 20 m/s in a distance of 50 m. Its acceleration isA runner goes 100 m east and then returns to the start. What is the net displacement?A walker goes 8 m east, then 6 m west. What are the distance and displacement?A car covers 60 km at 30 km/h and the next 60 km at 60 km/h. Its average speed isA body moves at 5 m/s for 4 s. What is the area under its v-t plot, and what does it mean?A v-t plot is a straight line from 0 to 10 m/s over 4 s. The displacement isA train at 90 km/h is moving at how many metres per second?On a position-time plot, a steeper straight line means what?The position-time plot of a uniformly moving object isThe velocity of a uniformly moving object at any instant equals what?A ruler dropped through your fingers is caught after falling 21.0 cm. Roughly what is the reaction time?In the ruler-drop test, the distance fallen by the ruler tells us what?The average velocity for constant acceleration equals what?A car moves at 40 km/h for half the time and 60 km/h for the other half. Average speed isA body has x = 2t + 3 (SI). What is its acceleration?Going up and coming down through one point, a ball's speeds areWhat does 'rate of change of position with respect to time' define?