Arihant Physics by D.C Pandey
Two particles having position vectors r1 =(3iˆ+5jˆ)meters and r2=(−5iˆ−3jˆ) metres are moving with velocities v1=(4iˆ+3jˆ)m/s and v2=(αiˆ+7jˆ)m/s. If they collide after 2s, the value of α is
18
Oct
Two particles having position vectors r1 =(3iˆ+5jˆ)meters and r2=(−5iˆ−3jˆ) metres are moving with velocities v1=(4iˆ+3jˆ)m/s and v2=(αiˆ+7jˆ)m/s. If they collide after 2s, the value of α is the value of α is Two particles having position vectors r1 =(3iˆ+5jˆ)meters and r2=(−5iˆ−3jˆ) metres are moving with velocities v1=(4iˆ+3jˆ)m/s and v2=(αiˆ+7jˆ)m/s. If they collide after 2s October [...]
The string in fig. is passing over small smooth pulley rigidly attached to trolley A. the trolley is moving horizontally with the speed vA. Speed of the block B at the instant shown in figure is
18
Oct
The string in fig. is passing over small smooth pulley rigidly attached to trolley A. the trolley is moving horizontally with the speed vA. Speed of the block B at the instant shown in figure is The string in fig. is passing over small smooth pulley rigidly attached to trolley A. the trolley is moving [...]
A particle moves along the positive x axis with an acceleration ax which increases linearly with x, as shown in the graph. If the velocity of the particle at
18
Oct
A particle moves along the positive x axis with an acceleration ax which increases linearly with x, as shown in the graph. If the velocity of the particle at A particle moves along the positive x axis with an acceleration ax which increases linearly with x as shown in the graph. If the velocity of [...]
The acceleration of a particle which moves along the positive x-axis varies with its position as shown in figure. If the velocity of the particle is 0.8ms−1 at x = 0, then velocity of the particle at x=1.4m is ( in ms^−1).
18
Oct
The acceleration of a particle which moves along the positive x-axis varies with its position as shown in figure. If the velocity of the particle is 0.8ms−1 at x = 0, then velocity of the particle at x=1.4m is ( in ms^−1). The acceleration of a particle which moves along the positive x-axis varies with [...]
A particle is moving along x-axis with constant acceleration. At t = 0, the particle is at x = 3 m and dx/dt = + 4 m/s. The maximum value of x co-ordinate of the particle is observed 2 seconds later. Starting from t=0 sec, after what time, particle reaches its initial position again?
18
Oct
A particle is moving along x-axis with constant acceleration. At t = 0, the particle is at x = 3 m and dx/dt = + 4 m/s. The maximum value of x co-ordinate of the particle is observed 2 seconds later. Starting from t=0 sec, after what time, particle reaches its initial position again? A [...]
A particle moves in x−y plane, starting from A along straight line path AB and BC as shown in the graph. When it is at point P angle between directions of its average velocity and instantaneous velocity is [tan37∘=3/4]
18
Oct
A particle moves in x−y plane, starting from A along straight line path AB and BC as shown in the graph. When it is at point P angle between directions of its average velocity and instantaneous velocity is [tan37∘=3/4] A particle moves in x−y plane starting from A along straight line path AB and BC [...]
In the one-dimensional motion of a particle, the relation between position x and time t is given by x^2 + 2x = t (here x>0). Choose the correct statement.
18
Oct
In the one-dimensional motion of a particle, the relation between position x and time t is given by x^2 + 2x = t (here x>0). Choose the correct statement. In the one-dimensional motion of a particle the relation between position x and time t is given by x^2 + 2x = t (here x>0). Choose [...]
A 2 m wide truck is moving with a uniform speed v0 = 8 ms^−1 along a straight horizontal road. A pedestrian starts to cross the road with a uniform speed v, when the truck is 4 m away from him. The minimum value of v so that he can cross the road safely is
18
Oct
A 2 m wide truck is moving with a uniform speed v0 = 8 ms^−1 along a straight horizontal road. A pedestrian starts to cross the road with a uniform speed v, when the truck is 4 m away from him. The minimum value of v so that he can cross the road safely is [...]
Starting from rest a particle moves in a straight line with acceleration a=[2+∣t−2∣]m/s^2 Velocity(in m/s) of particle at the end of 4s will be
18
Oct
Starting from rest a particle moves in a straight line with acceleration a=[2+∣t−2∣]m/s^2 Velocity(in m/s) of particle at the end of 4s will be Starting from rest a particle moves in a straight line with acceleration a=[2+∣t−2∣]m/s^2 Velocity(in m/s) of particle at the end of 4s will be October 18, 2020 Category: Arihant Physics by [...]
A car 2 m long and 3 m wide is moving at 10m/s. when a bullet hits in a direction making an angle of tan^-(3/4) with the car as seen from ground . The bullet enters one edge of the car at the corner passes out at diagonally opposite corner neglecting gravity , the time for the bullet to cross the car is?
18
Oct
A car 2 m long and 3 m wide is moving at 10m/s. when a bullet hits in a direction making an angle of tan^-(3/4) with the car as seen from ground . The bullet enters one edge of the car at the corner passes out at diagonally opposite corner neglecting gravity , the time [...]