A projectile is launched horizontally at a speed of 30. meters per second from a
platform located a vertical
distance h above the ground. The
projectile strikes the ground after
time t at horizontal distance d from the
base of the platform. [Neglect friction.]

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

a. vertically

explanation:

i tried it and took the test

if im wrong then we have different tests