The velocity of a particle moving in straight line depends on its position as v= 3sin [(pi /2) + x ] m/s. Find the acceleration of the particle when at x = pi / 4. (Ans : -9/2 m/s)

what is Weber and Weber/m^{2} is equal to?

A police constable is chasing a thief who is initially 10m ahead of the constable.The uniform speeds of the constable and the thief are 10m/s and 8 m/s respectively.From the plot of the position time graph for the constable and the thief ,find the time the constable will take to catch the thief and the distance the constable has to run.

(g = 10m/${s}^{2}$). Select the correct statements.

(A) Acceleration of block A, B and C are 1 m/${s}^{2}$, 3 m/${s}^{2}$and 5 m/${s}^{2}$ respectively

(B) Contact force between B & Ground is 350 N

(C) Tension in string 30N

(D) Contact force between 'B' and 'C' is 15 N

The velocity of a particle moving in straight line depends on its position as v= 3sin [(pi /2) + x ] m/s. Find the acceleration of the particle when at x = pi / 4. (Ans : -9/2 m/s)

^{2}, car B starts from rest with acceleration of 2 m/s^{2 1)as seen by passenger in car A a) first , car B moves backward and then forward b)}first , car B moves forward and then backward^{-5}erg s^{-1}cm^{-2}K^{-4}. How to write its value in SI unitswhat is Weber and Weber/m

^{2}is equal to?A police constable is chasing a thief who is initially 10m ahead of the constable.The uniform speeds of the constable and the thief are 10m/s and 8 m/s respectively.From the plot of the position time graph for the constable and the thief ,find the time the constable will take to catch the thief and the distance the constable has to run.

(a) 5/2 mg (b) 5/3 mg (c) 5/4 mg (d) None of these

Ans key: 1

10. A particle is moving on a circle of radius 1 km with constant speed 10 $\pi $ m/s. Find the change in velocity vector of particle in a time duration of 1 second (in m/s). (change is velocity = $\overrightarrow{{v}_{f}}-\overrightarrow{{v}_{i}}$ )

a)5.00 kg (b)5.004kg (c)5.01kg

fast please