Reference no: EM1311636

Question 1. A penny is dropped from the top of the Empire State building (369 m above ground). With what velocity does it strike the ground? Ignore air resistance.

1. 70 m/s up
2. 85 m/s down
3. 86 m/s up
4. 60 m/s up
5. 60 m/s down

Question 2. A rocket is launched from the origin with an acceleration of 20.0 m/s2 at an angle of 30 above the horizontal. The launch acceleration lasts for 2.0 seconds at which time the fuel is exhausted. The rocket then falls with an acceleration of 9.8 m/s2 downward. What is the maximum velocity in the upward direction?

1. 20 m/s
2. 30 m/s
3. 35 m/s
4. 25 m/s
5. 40 m/s

Question 3. A projectile is projected from the origin (yo= 0) with a velocity of 20.0 m/s at an angle of 30 degrees above the horizontal. The projectile lands on a roof that is 4.0 m height. What is the time when the projectile hits the roof?

1.  1.11 s
2.  1.49 s
3.  1.67 s
4.  1.27 s
5.  1.33 s

Question 4. A student undergoes a first displacement of 3.5 meters at an angle of 30 degrees NORTH of EAST. The student undergoes a second displacement of 5.0 meters at an angle of 45 degrees SOUTH of EAST. The x component, (EAST – WEST) of the total displacement is, ...?

1. 1.79 meters EAST
2. 1.79 meters WEST
3. 6.57 meters EAST
4. 6.57 meters WEST
5. 6.80 meters EAST

Question 5. A projectile is projected from the origin (yo= 0) with a velocity of 45.0 m/s at an angle of 30 degrees above the horizontal. What is the time it takes for the projectile to hit the ground?

1.  2.54 s
2.  5.31 s
3.  6.04 s
4.  3.02 s
5.  4.59 s