A student uses a plumb bob to verify that the doorjamb in a car ...

[Themember4]

A student uses a plumb bob to verify that the doorjamb in a car is vertical. As the car pulls away from a stop, the student observes that the string now makes an angle  with the doorjamb. What is the acceleration of the car?
 
  A) g sin
  B) g cos
  C) g tan
  D) g
  E)

Question 2

Air is flowing through a rocket nozzle. Inside the rocket the air has a density of 5.25 kg/m3 and a speed of 1.20 m/s. The interior diameter of the rocket is 15.0 cm. At the nozzle exit, the diameter is 2.50 cm and the density is 1.29 kg/m3.
 
  What is the speed of the air when it leaves the nozzle? A) 176 m/s
  B) 29.3 m/s
  C) 88.0 m/s
  D) 35.2 m/s
  E) 343 m/s

[welcom1000]

Answer to Question 1

C

Answer to Question 2

A

[Themember4]

Excellent

[kswal303]

TYSM