A projectile shot with an initial velocity of 141 m/s at an angle of 45° follows a parabolic path and hits a stationary balloon at the top if its trajectory. The speed it hits the balloon is
A)0 m/s.
B)50 m/s.
C)100 m/s.
D)141 m/s.

Question

Quizplus · Accepted Answer

At the top of its trajectory, the vertical component of the projectile's velocity is 0 m/s, but the horizontal component remains unchanged. Since the initial velocity is 141 m/s at 45°, the horizontal component is 141*cos(45°) = 100 m/s.

A Projectile Shot with an Initial Velocity of 141 M/s