A projectile is fired at 25^o above the horizontal. At the highest point in its trajectory, its speed is 100 m/s. If air resistance is ignored, the initial velocity had a horizontal component of A) 0 m/s. B) 100 cos(25^o) m/s. C) 100 sin(25^o) m/s. D) 100 m/s. E) 100/sin(25^o) m/s.

Question

Quizplus · Accepted Answer

At the highest point, the vertical component of velocity is zero, so the speed is entirely due to the horizontal component, which remains constant at 100 m/s.

A Projectile Is Fired at 25o Above the Horizontal

A Projectile Is Fired at 25^o Above the Horizontal