Question

3. For a projectile motion y(t) = 8t - 5tand x (1) = 67, where r and y are in metre and
is in seond. The initial velocity of this projectile is
(A) 6 m/s
(B) 8 m/s
(D) 14 m/s
(C) 10 m/s​

Answer 1

Answer:

8m/s

Explanation:

if we want to calculate velocity then differentiate y(t)=8t-5 and x (t)=67 is

dy(t)/dt=8m/s (according to differentiation)