Related InterviewSolutions

• A particle has a velocity u towards east at `t=0`. Its acceleration is towards west and is constant. Let `x_A` and `x_B` be the magnitude of displacements in the first 10 seconds and the next 10 secondsA. `x_Altx_B`B. `x_A=x_B`C. `x_Agtx_B`D. the information is insufficient to decide the relation of `x_A with x_B`.
• A man at a speed of 6 km/hr for 1 km and 8 km/hr for the next 1 km. What is t his average speed for the walk of 2 km?
• A particle moves along the X-axis as `x=u(t-2s)=at(t-2)^2`.A. the initial velocity of the particle is uB. the acceleration of the particle is aC. the acceleration of the particle is 2aD. at t=2 s particle is at the origin.
• A particle starting from rest moves with constant acceleration. If it takes 5.0 s to reash the speed 18.0 km/h find a. the average velocity during this period, and b. the distance travelled by the particle during this period.
• An athelete takes 2.0 s to reach his maximum speed of 18.0 km/h. What is the magnitude of his average acceleration?
• A ball is projected vertically upward with speed of 50 m/s. Find a. the maximum height, b. the time to reach themaximum height, c. the speed at half the maximum height. Take g=`10 m/s^2`.
• Six particles situated at the corners of a regular hexagon of side a move at a constant speed v. Each particle maintains a direction towards the particle at the next corner. Calculate the time the particles will take to meet each other.
• A car travelling ast 60 km/h overtakes another car travellign at 42 km/h. Assuming each car to be 5.0 m long, find the time taken during the overtake aned the total road distance used for the overtake.
• A person travelling on a straight line moves with a uniform velocity `v_1 for a distance x and with a uniform velocity `v_2` for the next equal distance. The average velocity v is given byA. `v=(v_1+v_2)/2`B. `v=sqrt(v_1v_2)`C. `2/v=1/v_1+1/v_2`D. `1/v=1/v_1+1/v_2`
• A person travelling at 43.2 km/h applies the brake giving a deceleration of `6.0 m/ss^2` to his scooter. How far will it travel before stopping?