An unfueled 1000-kg experimental rocket sled at rest on level ...

[magmichele12]

An unfueled 1000-kg experimental rocket sled at rest on level frictionless rails is loaded with 50 kg of propellant. It exhausts the propellant in a 20 s burn.. The rocket moves at 160 m/s after the burn. What average force is experienced by the rocket during the burn?
 a. 0.80  104 N
  c. 0.60  104 N
  b. 0.75  104 N
  d. 0.35  104 N

Question 2

Charge A has 10 electric field lines coming out, charge B has 20 lines coming out, and charge C has 30 lines coming in. Which pair of these charges will have the largest force between them if placed one cm apart?
 a. A and B
  c. More information is needed. b. B and C
  d. C and A

[akemokai]

Answer to Question 1

A

Answer to Question 2

B

[magmichele12]

Excellent

[helenmarkerine]

Gracias!