A projectile is launched with an initial velocity of 30 ms-1 at an angle of 60º above the horizontal. Calculate the magnitude and direction of its velocity 5.0s after launch.[Ans: 27 ms-1 , 57º below the horizontal]​

Which of the following statement is false

What are the dimensions of the cross section that passes through the points a, f, g, and d?

Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.