During a lecture demonstration, a professor places two coins on the edge of a table 1.3m above the floor. She then flicks one of the coins horizontally off the table so it is moving at 5.0 m/s horizontally when it leaves the table. Simultaneously she gently nudges the other coin over the edge. Which coin hits the floor first? a. The coin gently nudged over the side. b. The coin flicked horizontally. c. They hit the floor at the same time.

A helicopter blade spins at exactly 110 revolutions per minute. Its tip is 9.5 m from the center of rotation. A. What is the average speed of the blade tip in the helicopter's frame of reference, in meters per second?  B. What is the average velocity over one revolution, in meters per second?

6. A bullet traveling horizontally at a speed of 395 m/s hits a board perpendicular to the surface, passes through it, and emerges on the other side at a speed of 175 m/s. If the board is 3.30 cm thick, how long does the bullet take to pass through it? 0 ssY 60 s ssf60 ssf6 60 ssf60 s

A person who is 1.6 m tall throws a ball with a speed of 12 m/s at an angle of 79 degrees above the horizontal, as shown in the diagram below. h = 1.6 m, v = 12 m/s, 0 = 79 degrees %3D %3D Use the acceleration due to gravity as g = 10 m/s2. %3D

2. A group of students conducted a projectile experiment in which they fired a projectile at an unknown angle with varying speed. Students took the following data for projectile range and speed. Determine: a. What kind of graph comes out if initial velocity vs. range is plotted? R(m) Volm/s) 0.2 1.71 0.4 2.42 0.6 2.97 0.8 3.43 3.83 1.2 4.2 1.4 4.53 1.6 4.84 1.8 5.14 2 5.42 b. What is the linearization method for this graph? c. Make the linearized graph and determine its slope with its units. d. Determine the initial angle at which the projectile was launched.

Q1-A 2.0 meter tall basketball player is standing on the floor a distance from the basket. He shoots the ball at an angle of 23 degrees above the horizontal with a speed of 9.6 m/s and makes the shot. If the ball goes in the hoop at 5 seconds, what is the height of the hoop?

A rifle that shoots bullets at 474 m/s is to be aimed at a target 46.1 m away. If the center of the target is level with the rifle, how high above the target must the rifle barrel be pointed so that the bullet hits dead center? Number i Units

A fighter plane moving 233 m/s horizontally fires a projectile with speed 59 m/s in a forward direction 30.0° below the horizontal. What is the speed of the projectile with respect to a stationary observer on the ground? a) 249 m/s Ob) 2660 m/s c) 288 m/s d) 286 m/s