A firecracker is fired straight up with a speed of 100 m/s.Neglecting air resistance,the maximum height it will attain is
A)510 m.
B)325 m.
C)280 m.
D)129 m.

Question

Quizplus · Accepted Answer

The correct answer is A because the maximum height attained by a projectile is given by h = (v^2)/2g, where v is the initial velocity and g is the acceleration due to gravity. Plugging in the given values, we get h = (100 m/s)^2/(2 * 9.8 m/s^2) = 510 m.

A Firecracker Is Fired Straight Up with a Speed of 100