Question

The position of a particle in x-y plane at an instant of time t is given by
x = 12 + 20 t - 10 t2 and y = 10 + 15 t-6 t?. The initial speed of the projectile is
a) 10 m/s
b) 25 m/s
C) 17.5 m/s
d) 20 m/s​

Answer 1

answer is b

hope its help you ^_^_^