Answer :
Answer:
4m/s
Explanation
Give the initial velocity of am object as v =(4m/s)xi+(3m/s)yj
From the expression;
Vy = 3m/s
Vx = 4m/s
At the maximum height, the velocity of the body is zero i.e Vy = 0m/s
The velocity of the projectile as it reaches its highest point will be:
v = (4m/s)xi + 0
v = √4²+0²
v = √16
v = 4m/s
Hence he velocity of the projectile when it reaches its highest point is 4m/s