Question

1. A stone is thrown upward from a tower with initial velocity of 3 m/s. Height of tower is 50 m above the ground.

• What would be its position after 3.4 secs?
• What would be its speed after 3.4 secs?
• What would its velocity be when it hits the ground?

2. Duterte throws a ball upward at 15 m/s while standing on the edge of a building so that the ball can fall to the base of the building 50 m below. How long does it take the ball to reach the base of the building?

3. A Phil. Air Force helicopter is ascending vertically with a speed of 4.8 m/s at a height of 120 m above the earth, a package is dropped from the helicopter on a mission. How much time does it take for the package to reach the ground?

4. A ball is thrown vertically upward with an initial velocity of 3 m/s, from the window of a condominium. The ball strikes the sidewalk at the ground level 4 seconds later. Find the height of the window above the ground level.

5. A window of the new condominium at Ayala Commercial Center has a height of window “h” above the ground level. A boy throws a ball with an initial velocity of 2.8 m/s upward from the window of the building. Find the value of “h” if the ball strikes the ground 4.2 sec. later.

Answer 1

comment

1)1)the position of the stone after 3.4 sec is 66.844m above the tower or 116.844m above the ground.

1)2)speed of the stone after 3.4 sec was found to be 36.32 m/s.

1)3)velocity of the stone when it reaches the ground is found to be 31.45 m/sec.