Physics-
General
Easy

Question

A body falls from rest in the gravitational field of the earth. The distance travelled in the fifth second of its motion is (g equals 10 blank m divided by s to the power of 2 end exponent)

  1. 25 m  
  2. 45 m  
  3. 90 m  
  4. 125 m  

The correct answer is: 45 m


    h subscript n end subscript equals fraction numerator g over denominator 2 end fraction open parentheses 2 n minus 1 close parentheses rightwards double arrow h subscript 5 to the power of t h end exponent end subscript equals fraction numerator 10 over denominator 2 end fraction open parentheses 2 cross times 5 minus 1 close parentheses equals 45 blank m

    Related Questions to study

    General
    Physics-

    The displacement of a particle starting from rest left parenthesis a t blank t equals 0 right parenthesis is given by s equals 6 t to the power of 2 end exponent minus t to the power of 3 end exponent. The time in seconds at which the particle will attain zero velocity again, is

    The displacement of a particle starting from rest left parenthesis a t blank t equals 0 right parenthesis is given by s equals 6 t to the power of 2 end exponent minus t to the power of 3 end exponent. The time in seconds at which the particle will attain zero velocity again, is

    Physics-General
    General
    Physics-

    Two balls are dropped to the ground from different heights. One ball is dropped 2 s after the other but they both strike the ground at the same time. If the first ball takes 5 s to reach the ground, then the difference in initial heights is left parenthesis g equals 10 blank m s to the power of negative 2 end exponent right parenthesis

    Two balls are dropped to the ground from different heights. One ball is dropped 2 s after the other but they both strike the ground at the same time. If the first ball takes 5 s to reach the ground, then the difference in initial heights is left parenthesis g equals 10 blank m s to the power of negative 2 end exponent right parenthesis

    Physics-General
    General
    Physics-

    A lift in which a man is standing, is moving upward with a speed of 10m s to the power of negative 1 end exponent. The man drops a coin from a height of 4.9m and if g equals 9.8 blank m s to the power of negative 2 end exponent commathen the coin reaches the floor of the lift after a time

    A lift in which a man is standing, is moving upward with a speed of 10m s to the power of negative 1 end exponent. The man drops a coin from a height of 4.9m and if g equals 9.8 blank m s to the power of negative 2 end exponent commathen the coin reaches the floor of the lift after a time

    Physics-General
    parallel
    General
    Physics-

    Consider the acceleration, velocity and displacement of a tennis ball as it falls to the ground and bounces back. Directions of which of these changes in the process

    Consider the acceleration, velocity and displacement of a tennis ball as it falls to the ground and bounces back. Directions of which of these changes in the process

    Physics-General
    General
    Physics-

    Figures i) and ii) below show the displacement-time graphs of two particles moving along the x-axis. We can say that

    Figures i) and ii) below show the displacement-time graphs of two particles moving along the x-axis. We can say that
    Physics-General

    General
    Physics-

    The graph of displacement v divided by s time is
    Its corresponding velocity-time graph will be

    The graph of displacement v divided by s time is
    Its corresponding velocity-time graph will be

    Physics-General
    parallel
    General
    Physics-

    A cat moves from X to Y with a uniform speed v subscript u end subscriptand returns toX with a uniform speed v subscript d end subscript. The average speed for this ground trip is

    A cat moves from X to Y with a uniform speed v subscript u end subscriptand returns toX with a uniform speed v subscript d end subscript. The average speed for this ground trip is

    Physics-General
    General
    Physics-

    A student is standing at a distance of 50 m from the bus. As soon as the bus begins its motion with an acceleration of 1 blank m s to the power of negative 2 end exponent comma the students starts running towards the bus with a uniform velocity u. Assuming the motion to be along a straight road, the minimum value of u comma so that the student is able to catch the bus is

    A student is standing at a distance of 50 m from the bus. As soon as the bus begins its motion with an acceleration of 1 blank m s to the power of negative 2 end exponent comma the students starts running towards the bus with a uniform velocity u. Assuming the motion to be along a straight road, the minimum value of u comma so that the student is able to catch the bus is

    Physics-General
    General
    Physics-

    The numerical ratio of displacement to the distance covered is always

    The numerical ratio of displacement to the distance covered is always

    Physics-General
    parallel
    General
    Physics-

    Two trains travelling on the same track are approaching each other with equal speeds of 40m divided by s. The drivers of the trains begin to decelerate simultaneously when they are just 2.0 k m apart. Assuming the decelerations to be uniform and equal, the value of the deceleration to barely avoid collision should be

    Two trains travelling on the same track are approaching each other with equal speeds of 40m divided by s. The drivers of the trains begin to decelerate simultaneously when they are just 2.0 k m apart. Assuming the decelerations to be uniform and equal, the value of the deceleration to barely avoid collision should be

    Physics-General
    General
    Physics-

    A body freely falling from the rest has a velocity ´ v ´ after it falls through a height ‘h ´.
    The distance it has to fall down for its velocity to become double, is

    A body freely falling from the rest has a velocity ´ v ´ after it falls through a height ‘h ´.
    The distance it has to fall down for its velocity to become double, is

    Physics-General
    General
    Physics-

    A truck and a car are moving with equal velocity. On applying the brakes both will stop after certain distance, then

    A truck and a car are moving with equal velocity. On applying the brakes both will stop after certain distance, then

    Physics-General
    parallel
    General
    Physics-

    A body starts from origin and moves along x-axis such that at any instant velocity is v subscript t end subscript equals 4 t to the power of 3 end exponent minus 2 t where t is in second and v subscript t end subscriptin m s to the power of negative 1 end exponent. The acceleration of the particle when it is 2m from the origin is

    A body starts from origin and moves along x-axis such that at any instant velocity is v subscript t end subscript equals 4 t to the power of 3 end exponent minus 2 t where t is in second and v subscript t end subscriptin m s to the power of negative 1 end exponent. The acceleration of the particle when it is 2m from the origin is

    Physics-General
    General
    Physics-

    Two balls are dropped to the ground from different heights. One ball is dropped 2 s after the other but they both strike the ground at the same time. If the first ball takes 5 s to reach the ground, then the difference in initial heights is open parentheses g equals 10 blank m s to the power of negative 2 end exponent close parentheses

    Two balls are dropped to the ground from different heights. One ball is dropped 2 s after the other but they both strike the ground at the same time. If the first ball takes 5 s to reach the ground, then the difference in initial heights is open parentheses g equals 10 blank m s to the power of negative 2 end exponent close parentheses

    Physics-General
    General
    Physics-

    A particle is projected with velocity v subscript 0 end subscript along x minus a x i s.The deceleration on the particle is proportional to the square of the distance from the origin i.e., a equals negative a x to the power of 2 end exponent.The distance at which the particle stops is

    A particle is projected with velocity v subscript 0 end subscript along x minus a x i s.The deceleration on the particle is proportional to the square of the distance from the origin i.e., a equals negative a x to the power of 2 end exponent.The distance at which the particle stops is

    Physics-General
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.