Question

A particle is projected from ground at an angle 45$^\circ$ with initial velocity $20\sqrt{2}ms^{-1}$. The magnitude of average velocity in a time interval from t = 0 to t = 3s in $ms^{-1}$ is.

• A. 20 .62
• B. 10.31
• C. 41 .14
• D. 5.15

Answer 1

Answer: (A)

20 .62

Answer 2

u = u$_x$ i + u$_y$ j u$_f$ = u$_x$i +(u$_y$ - gt) j, $V_{avg} = \frac{u_i+ u_ f}{2}$