A particle starts with initial velocity of (2 hat i + hat j ) m / s . Uniform acceleration (- hat i +3 hat j ) m / s 2 . What is y component of velocity at the instant when x component of velocity becomes zero?

Question

A particle starts with initial velocity of (2 hat i + hat j ) m / s . Uniform acceleration (- hat i +3 hat j ) m / s 2 . What is y component of velocity at the instant when x component of velocity becomes zero? (A) 5 m / s (B) 7 m / s (C) 6 m / s (D) 10 m / s

Tardigrade Admin · Accepted Answer

At any instant 't' vx=2-t vy=1+3 t when vx=0, t=2 v y =7 m / s

Q. A particle starts with initial velocity of $(2 \hat{i} + \hat{j})$ $m / s .$ Uniform acceleration $(- \hat{i} + 3 \hat{j}) m / s^{2} .$ What is $y$ component of velocity at the instant when $x$ component of velocity becomes zero?

$5 m / s$

$7 m / s$

$6 m / s$

$10 m / s$

At any instant 't'
$v_{x} = 2 - t$
$v_{y} = 1 + 3 t$
when $v_{x} = 0, t = 2$
$v_{y} = 7 m / s$

Q. A particle starts with initial velocity of (2i^+j^​) m/s. Uniform acceleration (−i^+3j^​)m/s2. What is y component of velocity at the instant when x component of velocity becomes zero?

5m/s

7m/s

6m/s

10m/s