A spring-loaded gun can fire a projectile to a height h if it is fired straight up. If the same gun is pointed at an angle of 45° from the vertical, what maximum height can now be reached by the projectile? h4

The maximum height can  be reached by the projectile

Explanation:

Height = h

Height in a projectile motion is given by

When gun fired  straight up then = 90°

In that case Height

------ (1)

When ° then

From equation (1)

This is the maximum height can  be reached by the projectile.

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true