A certain spherical asteroid has a mass of is 4.65 1017 kg and a ...

[torybrooks]

A certain spherical asteroid has a mass of is 4.65  1017 kg and a radius of 39,600 m.
 
  If a 150-kg object is dropped from rest at an altitude of 12,400 m above the surface of this asteroid, with what speed will it hit the surface? (G = 6.67  10-11 N  m2/kg2 )
  A) 19.3 m/s
  B) 22.7 m/s
  C) 26.2 m/s
  D) 18.2 m/s
  E) 13.8 m/s

Question 2

A projectile is thrown upward at 24 with the vertical and returns to the horizontal ground 12.5 s later with no air drag.
 
  (a) How fast was it thrown?
  (b) How far from its original position did it land?
  (c) How high above its original position did it go?

[tuwy]

Answer to Question 1

A

Answer to Question 2

(a) 67 m/s (b) 340 m (c) 190 m

[torybrooks]

Excellent

[chereeb]

TYSM